./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --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 64bit --witnessprinter.graph.data.programhash d60183102582204ad3b2c5c2967c5e39411556c79eb47cc4f179f5b1b7f07a77 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:35:44,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:35:44,666 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 17:35:44,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:35:44,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:35:44,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:35:44,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:35:44,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:35:44,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:35:44,700 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:35:44,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:35:44,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:35:44,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:35:44,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:35:44,703 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:35:44,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:35:44,704 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:35:44,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:35:44,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:35:44,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:35:44,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:35:44,722 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:35:44,723 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:35:44,723 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:35:44,727 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:35:44,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:35:44,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:35:44,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:35:44,729 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:35:44,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:35:44,729 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:35:44,730 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:35:44,730 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:35:44,730 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:35:44,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:35:44,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:35:44,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:35:44,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:35:44,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:35:44,736 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d60183102582204ad3b2c5c2967c5e39411556c79eb47cc4f179f5b1b7f07a77 [2024-11-08 17:35:45,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:35:45,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:35:45,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:35:45,116 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:35:45,117 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:35:45,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i Unable to find full path for "g++" [2024-11-08 17:35:47,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:35:47,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:35:47,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i [2024-11-08 17:35:47,666 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/data/e85ff0e7b/e1f50f931d9843c1ae3240a3d8da234c/FLAGdb187349d [2024-11-08 17:35:47,687 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/data/e85ff0e7b/e1f50f931d9843c1ae3240a3d8da234c [2024-11-08 17:35:47,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:35:47,693 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:35:47,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:35:47,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:35:47,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:35:47,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:35:47" (1/1) ... [2024-11-08 17:35:47,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e8652b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:47, skipping insertion in model container [2024-11-08 17:35:47,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:35:47" (1/1) ... [2024-11-08 17:35:47,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:35:48,154 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4495,4508] [2024-11-08 17:35:48,164 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4555,4568] [2024-11-08 17:35:49,151 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,152 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,153 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,154 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,156 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,178 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,179 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,181 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,182 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,185 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,187 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,188 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,188 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:49,952 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[150660,150673] [2024-11-08 17:35:49,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:35:49,972 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:35:49,994 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4495,4508] [2024-11-08 17:35:49,994 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4555,4568] [2024-11-08 17:35:50,141 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,149 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,150 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,150 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,151 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,175 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,176 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,181 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,182 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,183 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,197 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,198 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,198 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:35:50,335 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[150660,150673] [2024-11-08 17:35:50,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:35:50,528 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:35:50,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50 WrapperNode [2024-11-08 17:35:50,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:35:50,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:35:50,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:35:50,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:35:50,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,687 INFO L138 Inliner]: procedures = 668, calls = 1043, calls flagged for inlining = 51, calls inlined = 5, statements flattened = 133 [2024-11-08 17:35:50,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:35:50,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:35:50,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:35:50,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:35:50,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,770 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 5, 20]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 6 writes are split as follows [0, 0, 6]. [2024-11-08 17:35:50,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,811 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:35:50,832 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:35:50,832 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:35:50,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:35:50,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (1/1) ... [2024-11-08 17:35:50,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:35:50,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:35:50,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:35:50,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:35:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:35:50,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 17:35:50,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 17:35:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-08 17:35:50,916 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-08 17:35:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:35:50,916 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-08 17:35:50,916 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-08 17:35:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:35:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:35:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:35:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:35:50,917 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_front [2024-11-08 17:35:50,917 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_front [2024-11-08 17:35:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:35:50,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:35:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-08 17:35:50,918 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-08 17:35:50,918 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 17:35:50,918 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 17:35:50,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:35:50,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:35:50,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:35:50,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:35:50,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-08 17:35:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-08 17:35:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-08 17:35:50,923 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-08 17:35:50,924 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-08 17:35:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-08 17:35:50,924 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-08 17:35:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:35:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:35:50,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 17:35:51,222 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:35:51,225 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:35:51,612 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-11-08 17:35:51,612 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:35:51,637 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:35:51,639 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:35:51,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:35:51 BoogieIcfgContainer [2024-11-08 17:35:51,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:35:51,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:35:51,644 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:35:51,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:35:51,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:35:47" (1/3) ... [2024-11-08 17:35:51,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e498d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:35:51, skipping insertion in model container [2024-11-08 17:35:51,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:35:50" (2/3) ... [2024-11-08 17:35:51,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e498d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:35:51, skipping insertion in model container [2024-11-08 17:35:51,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:35:51" (3/3) ... [2024-11-08 17:35:51,654 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_front_harness.i [2024-11-08 17:35:51,674 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:35:51,675 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:35:51,767 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:35:51,775 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62d945bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:35:51,775 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:35:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 66 states have internal predecessors, (84), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-08 17:35:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-08 17:35:51,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:35:51,792 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:35:51,793 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:35:51,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:35:51,798 INFO L85 PathProgramCache]: Analyzing trace with hash -899777360, now seen corresponding path program 1 times [2024-11-08 17:35:51,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:35:51,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338137218] [2024-11-08 17:35:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:35:51,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:35:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:35:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:35:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:35:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:35:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:35:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-08 17:35:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-08 17:35:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 17:35:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:35:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:35:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:35:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-08 17:35:52,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:35:52,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338137218] [2024-11-08 17:35:52,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338137218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:35:52,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:35:52,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:35:52,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894192753] [2024-11-08 17:35:52,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:35:52,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:35:52,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:35:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:35:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:35:52,584 INFO L87 Difference]: Start difference. First operand has 99 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 66 states have internal predecessors, (84), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-08 17:35:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:35:52,634 INFO L93 Difference]: Finished difference Result 190 states and 270 transitions. [2024-11-08 17:35:52,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:35:52,638 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-11-08 17:35:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:35:52,648 INFO L225 Difference]: With dead ends: 190 [2024-11-08 17:35:52,648 INFO L226 Difference]: Without dead ends: 94 [2024-11-08 17:35:52,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:35:52,661 INFO L432 NwaCegarLoop]: 130 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, 130 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 [2024-11-08 17:35:52,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:35:52,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-08 17:35:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-08 17:35:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.278688524590164) internal successors, (78), 62 states have internal predecessors, (78), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-08 17:35:52,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2024-11-08 17:35:52,736 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 84 [2024-11-08 17:35:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:35:52,737 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 125 transitions. [2024-11-08 17:35:52,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-08 17:35:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 125 transitions. [2024-11-08 17:35:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-08 17:35:52,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:35:52,746 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:35:52,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:35:52,748 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:35:52,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:35:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash -900879384, now seen corresponding path program 1 times [2024-11-08 17:35:52,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:35:52,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283087252] [2024-11-08 17:35:52,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:35:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:35:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:35:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:35:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-08 17:35:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:35:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-08 17:35:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-08 17:35:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-08 17:35:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 17:35:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:35:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:35:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:35:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-08 17:35:53,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:35:53,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283087252] [2024-11-08 17:35:53,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283087252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:35:53,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682873154] [2024-11-08 17:35:53,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:35:53,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:35:53,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:35:53,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:35:53,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:35:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:35:54,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 17:35:54,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:35:54,472 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-08 17:35:54,483 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-11-08 17:35:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:35:56,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:36:10,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 84 treesize of output 80 [2024-11-08 17:36:10,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:10,353 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:10,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 35 [2024-11-08 17:36:10,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-08 17:36:10,375 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:36:10,375 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-08 17:36:10,381 INFO L378 Elim1Store]: Elim1 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 6 treesize of output 4 [2024-11-08 17:36:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 17:36:10,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682873154] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:10,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:36:10,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [6, 17] total 34 [2024-11-08 17:36:10,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887982616] [2024-11-08 17:36:10,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:36:10,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 17:36:10,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:36:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 17:36:10,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1012, Unknown=3, NotChecked=0, Total=1122 [2024-11-08 17:36:10,575 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. Second operand has 17 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 13 states have internal predecessors, (41), 7 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-08 17:36:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:36:11,371 INFO L93 Difference]: Finished difference Result 170 states and 232 transitions. [2024-11-08 17:36:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:36:11,374 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 13 states have internal predecessors, (41), 7 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 84 [2024-11-08 17:36:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:36:11,376 INFO L225 Difference]: With dead ends: 170 [2024-11-08 17:36:11,376 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 17:36:11,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 153 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=117, Invalid=1140, Unknown=3, NotChecked=0, Total=1260 [2024-11-08 17:36:11,381 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 11 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:36:11,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1262 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:36:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 17:36:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-08 17:36:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 64 states have internal predecessors, (80), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-08 17:36:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2024-11-08 17:36:11,400 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 84 [2024-11-08 17:36:11,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:36:11,402 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2024-11-08 17:36:11,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 13 states have internal predecessors, (41), 7 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-08 17:36:11,402 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2024-11-08 17:36:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-08 17:36:11,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:36:11,405 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:36:11,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:36:11,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-08 17:36:11,606 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:36:11,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:36:11,607 INFO L85 PathProgramCache]: Analyzing trace with hash -945974621, now seen corresponding path program 1 times [2024-11-08 17:36:11,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:36:11,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75854631] [2024-11-08 17:36:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:11,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:36:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:36:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:36:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:36:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:36:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:36:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-08 17:36:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 17:36:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:36:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 17:36:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:36:12,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:36:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75854631] [2024-11-08 17:36:12,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75854631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504594876] [2024-11-08 17:36:12,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:12,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:12,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:36:12,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:36:12,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:36:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:12,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 17:36:12,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:36:12,684 INFO L378 Elim1Store]: Elim1 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 [2024-11-08 17:36:12,861 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2024-11-08 17:36:12,878 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2024-11-08 17:36:12,999 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:36:13,000 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 11 [2024-11-08 17:36:13,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:13,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:13,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2024-11-08 17:36:13,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:13,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:13,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2024-11-08 17:36:13,049 INFO L378 Elim1Store]: Elim1 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 27 treesize of output 20 [2024-11-08 17:36:13,068 INFO L378 Elim1Store]: Elim1 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 34 treesize of output 25 [2024-11-08 17:36:13,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:13,236 INFO L378 Elim1Store]: Elim1 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 100 treesize of output 87 [2024-11-08 17:36:13,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:13,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:13,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:13,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 75 [2024-11-08 17:36:13,269 INFO L378 Elim1Store]: Elim1 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 78 treesize of output 25 [2024-11-08 17:36:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-08 17:36:15,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:36:15,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:15,949 INFO L378 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2024-11-08 17:36:16,164 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:36:16,166 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:36:16,279 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-08 17:36:16,280 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 299 treesize of output 286 [2024-11-08 17:36:16,305 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:36:16,306 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:36:16,413 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-08 17:36:16,413 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 4 case distinctions, treesize of input 203 treesize of output 232 [2024-11-08 17:36:16,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:16,452 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 262 treesize of output 260 [2024-11-08 17:36:16,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:16,481 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 294 [2024-11-08 17:36:16,507 INFO L378 Elim1Store]: Elim1 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 253 treesize of output 241 [2024-11-08 17:36:16,535 INFO L378 Elim1Store]: Elim1 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 265 treesize of output 253 [2024-11-08 17:36:16,577 INFO L378 Elim1Store]: Elim1 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 8 treesize of output 4 [2024-11-08 17:36:16,687 INFO L378 Elim1Store]: Elim1 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 8 treesize of output 4 [2024-11-08 17:36:18,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:18,504 INFO L378 Elim1Store]: Elim1 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 448 treesize of output 438 [2024-11-08 17:36:19,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:19,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 521 treesize of output 495 [2024-11-08 17:36:21,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504594876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:21,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:36:21,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13] total 17 [2024-11-08 17:36:21,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493352935] [2024-11-08 17:36:21,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:36:21,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 17:36:21,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:36:21,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 17:36:21,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=562, Unknown=10, NotChecked=0, Total=650 [2024-11-08 17:36:21,498 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 17 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-08 17:36:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:36:23,945 INFO L93 Difference]: Finished difference Result 268 states and 366 transitions. [2024-11-08 17:36:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 17:36:23,946 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 86 [2024-11-08 17:36:23,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:36:23,950 INFO L225 Difference]: With dead ends: 268 [2024-11-08 17:36:23,950 INFO L226 Difference]: Without dead ends: 189 [2024-11-08 17:36:23,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 154 SyntacticMatches, 15 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=217, Invalid=1578, Unknown=11, NotChecked=0, Total=1806 [2024-11-08 17:36:23,952 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 257 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:36:23,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1089 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 17:36:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-08 17:36:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 184. [2024-11-08 17:36:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.2833333333333334) internal successors, (154), 124 states have internal predecessors, (154), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-08 17:36:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 248 transitions. [2024-11-08 17:36:24,003 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 248 transitions. Word has length 86 [2024-11-08 17:36:24,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:36:24,004 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 248 transitions. [2024-11-08 17:36:24,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 7 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-08 17:36:24,004 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 248 transitions. [2024-11-08 17:36:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-08 17:36:24,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:36:24,007 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:36:24,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:36:24,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:24,211 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:36:24,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:36:24,212 INFO L85 PathProgramCache]: Analyzing trace with hash 213489405, now seen corresponding path program 1 times [2024-11-08 17:36:24,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:36:24,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745279270] [2024-11-08 17:36:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:36:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:36:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:36:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:36:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:36:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:36:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-08 17:36:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-08 17:36:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:36:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 17:36:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 17:36:24,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:36:24,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745279270] [2024-11-08 17:36:24,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745279270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:24,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695804258] [2024-11-08 17:36:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:24,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:24,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:36:24,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:36:24,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:36:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:24,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:36:24,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:36:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 17:36:25,035 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:36:25,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695804258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:36:25,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:36:25,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2024-11-08 17:36:25,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909250355] [2024-11-08 17:36:25,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:36:25,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:36:25,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:36:25,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:36:25,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:36:25,038 INFO L87 Difference]: Start difference. First operand 184 states and 248 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:36:25,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:36:25,404 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2024-11-08 17:36:25,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:36:25,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 88 [2024-11-08 17:36:25,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:36:25,407 INFO L225 Difference]: With dead ends: 347 [2024-11-08 17:36:25,408 INFO L226 Difference]: Without dead ends: 188 [2024-11-08 17:36:25,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:36:25,410 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 138 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:36:25,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 584 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:36:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-08 17:36:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2024-11-08 17:36:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 124 states have internal predecessors, (152), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-08 17:36:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 246 transitions. [2024-11-08 17:36:25,458 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 246 transitions. Word has length 88 [2024-11-08 17:36:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:36:25,460 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 246 transitions. [2024-11-08 17:36:25,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:36:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 246 transitions. [2024-11-08 17:36:25,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 17:36:25,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:36:25,467 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:36:25,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:36:25,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:25,668 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:36:25,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:36:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash -342138983, now seen corresponding path program 1 times [2024-11-08 17:36:25,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:36:25,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034309989] [2024-11-08 17:36:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:25,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:36:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:25,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:36:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:25,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:36:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:36:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:36:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:36:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-08 17:36:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-08 17:36:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:36:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 17:36:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-08 17:36:26,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:36:26,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034309989] [2024-11-08 17:36:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034309989] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:26,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069651343] [2024-11-08 17:36:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:26,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:26,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:36:26,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:36:26,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:36:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:26,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:36:26,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:36:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 17:36:26,519 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:36:26,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069651343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:36:26,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:36:26,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-11-08 17:36:26,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379581139] [2024-11-08 17:36:26,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:36:26,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:36:26,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:36:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:36:26,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:36:26,522 INFO L87 Difference]: Start difference. First operand 184 states and 246 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:36:26,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:36:26,993 INFO L93 Difference]: Finished difference Result 361 states and 488 transitions. [2024-11-08 17:36:26,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:36:26,994 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 90 [2024-11-08 17:36:26,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:36:26,996 INFO L225 Difference]: With dead ends: 361 [2024-11-08 17:36:26,997 INFO L226 Difference]: Without dead ends: 200 [2024-11-08 17:36:26,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:36:26,999 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 157 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:36:26,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 638 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:36:27,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-08 17:36:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2024-11-08 17:36:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 124 states have (on average 1.2580645161290323) internal successors, (156), 128 states have internal predecessors, (156), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-08 17:36:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2024-11-08 17:36:27,029 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 90 [2024-11-08 17:36:27,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:36:27,030 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2024-11-08 17:36:27,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:36:27,030 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2024-11-08 17:36:27,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-08 17:36:27,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:36:27,032 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:36:27,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:36:27,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:27,236 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:36:27,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:36:27,237 INFO L85 PathProgramCache]: Analyzing trace with hash -744591030, now seen corresponding path program 1 times [2024-11-08 17:36:27,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:36:27,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902622424] [2024-11-08 17:36:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:27,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:36:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:36:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:36:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:36:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:36:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:36:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 17:36:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 17:36:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 17:36:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:36:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-08 17:36:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:36:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902622424] [2024-11-08 17:36:27,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902622424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521050840] [2024-11-08 17:36:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:27,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:27,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:36:27,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:36:27,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:36:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:27,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:36:27,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:36:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 17:36:27,861 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:36:27,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521050840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:36:27,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:36:27,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-08 17:36:27,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434721076] [2024-11-08 17:36:27,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:36:27,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:36:27,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:36:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:36:27,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:36:27,863 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-08 17:36:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:36:27,906 INFO L93 Difference]: Finished difference Result 353 states and 478 transitions. [2024-11-08 17:36:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:36:27,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2024-11-08 17:36:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:36:27,909 INFO L225 Difference]: With dead ends: 353 [2024-11-08 17:36:27,909 INFO L226 Difference]: Without dead ends: 196 [2024-11-08 17:36:27,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:36:27,911 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 2 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:36:27,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 234 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:36:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-08 17:36:27,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 190. [2024-11-08 17:36:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 126 states have (on average 1.253968253968254) internal successors, (158), 130 states have internal predecessors, (158), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-08 17:36:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2024-11-08 17:36:27,941 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 92 [2024-11-08 17:36:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:36:27,941 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2024-11-08 17:36:27,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-08 17:36:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2024-11-08 17:36:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 17:36:27,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:36:27,943 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:36:27,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:36:28,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:28,144 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:36:28,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:36:28,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1507104332, now seen corresponding path program 1 times [2024-11-08 17:36:28,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:36:28,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765465412] [2024-11-08 17:36:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:28,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:36:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:36:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:36:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:36:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:36:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:36:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:36:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:36:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:36:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:36:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:36:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-08 17:36:28,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:36:28,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765465412] [2024-11-08 17:36:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765465412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:28,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910845802] [2024-11-08 17:36:28,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:28,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:28,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:36:28,857 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:36:28,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:36:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:29,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 17:36:29,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:36:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 17:36:29,356 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:36:29,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910845802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:36:29,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:36:29,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 15 [2024-11-08 17:36:29,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84393019] [2024-11-08 17:36:29,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:36:29,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:36:29,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:36:29,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:36:29,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:36:29,363 INFO L87 Difference]: Start difference. First operand 190 states and 252 transitions. Second operand has 13 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-08 17:36:29,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:36:29,850 INFO L93 Difference]: Finished difference Result 355 states and 472 transitions. [2024-11-08 17:36:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:36:29,851 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 100 [2024-11-08 17:36:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:36:29,854 INFO L225 Difference]: With dead ends: 355 [2024-11-08 17:36:29,856 INFO L226 Difference]: Without dead ends: 196 [2024-11-08 17:36:29,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:36:29,858 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 112 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:36:29,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 980 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:36:29,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-08 17:36:29,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2024-11-08 17:36:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 128 states have (on average 1.25) internal successors, (160), 132 states have internal predecessors, (160), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-08 17:36:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 254 transitions. [2024-11-08 17:36:29,892 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 254 transitions. Word has length 100 [2024-11-08 17:36:29,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:36:29,893 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 254 transitions. [2024-11-08 17:36:29,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-08 17:36:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 254 transitions. [2024-11-08 17:36:29,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:36:29,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:36:29,895 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:36:29,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:36:30,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:30,096 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:36:30,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:36:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1576257320, now seen corresponding path program 1 times [2024-11-08 17:36:30,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:36:30,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883008395] [2024-11-08 17:36:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:30,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:36:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:30,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:36:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:30,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:36:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:30,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:36:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:30,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:30,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:36:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:30,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:36:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:30,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:36:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:31,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:36:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:31,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 17:36:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:31,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:31,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-08 17:36:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:31,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 17:36:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-08 17:36:31,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:36:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883008395] [2024-11-08 17:36:31,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883008395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441385709] [2024-11-08 17:36:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:31,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:31,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:36:31,076 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:36:31,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:36:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:31,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-08 17:36:31,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:36:31,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:31,497 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2024-11-08 17:36:31,510 INFO L378 Elim1Store]: Elim1 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 8 treesize of output 1 [2024-11-08 17:36:31,631 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34| Int) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24| Int)) (and (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| Int)) (let ((.cse0 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|)) (.cse1 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24| 24))) (let ((.cse2 (select .cse0 .cse1))) (and (= .cse0 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34| v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|) .cse1 .cse2)) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|) (<= .cse2 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16|))))) (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24|))) is different from true [2024-11-08 17:36:31,984 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34| Int) (v_DerPreprocessor_3 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24| Int) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| Int)) (let ((.cse2 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|)) (.cse0 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24| 24))) (let ((.cse1 (select .cse2 .cse0))) (and (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34| v_DerPreprocessor_3) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_4) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|) .cse0 .cse1) .cse2) (<= .cse1 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17|) (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24|))))) (exists ((v_DerPreprocessor_1 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35| Int) (v_DerPreprocessor_2 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| Int)) (let ((.cse3 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|)) (.cse4 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25| 24))) (let ((.cse5 (select .cse3 .cse4))) (and (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25|) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|) (= .cse3 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| v_DerPreprocessor_2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|) .cse4 .cse5)) (<= .cse5 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16|)))))) is different from true [2024-11-08 17:36:33,027 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34| Int) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24| Int) (v_DerPreprocessor_7 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19| Int) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|)) (.cse2 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24| 24))) (let ((.cse0 (select .cse1 .cse2))) (and (<= .cse0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19|) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34| v_DerPreprocessor_7) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19| v_DerPreprocessor_8) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|) .cse2 .cse0)) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|) (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24|))))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37| Int) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| Int)) (let ((.cse5 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|)) (.cse4 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_27| 24))) (let ((.cse3 (select .cse5 .cse4))) (and (<= .cse3 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17|) (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_27|) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37| v_DerPreprocessor_3) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_4) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|) .cse4 .cse3) .cse5))))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35| Int) (v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18| Int) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25| Int)) (let ((.cse8 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|)) (.cse6 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25| 24))) (let ((.cse7 (select .cse8 .cse6))) (and (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25|) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_5) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18| v_DerPreprocessor_6) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|) .cse6 .cse7) .cse8) (<= .cse7 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18|))))) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int)) (v_aws_linked_list_front_~list.base_BEFORE_CALL_21 Int) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_19 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| Int)) (let ((.cse11 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_21)) (.cse9 (+ v_aws_linked_list_front_~list.offset_BEFORE_CALL_19 24))) (let ((.cse10 (select .cse11 .cse9))) (and (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_21 v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_21) .cse9 .cse10) .cse11) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| 2) v_aws_linked_list_front_~list.base_BEFORE_CALL_21) (<= 0 v_aws_linked_list_front_~list.offset_BEFORE_CALL_19) (<= .cse10 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16|)))))) is different from true [2024-11-08 17:36:35,810 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34| Int) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24| Int) (v_DerPreprocessor_7 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19| Int) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|)) (.cse2 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24| 24))) (let ((.cse0 (select .cse1 .cse2))) (and (<= .cse0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19|) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34| v_DerPreprocessor_7) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19| v_DerPreprocessor_8) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|) .cse2 .cse0)) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|) (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24|))))) (exists ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_20| Int) (v_DerPreprocessor_10 (Array Int Int)) (v_aws_linked_list_front_~list.base_BEFORE_CALL_21 Int) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_19 Int) (v_DerPreprocessor_9 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_21)) (.cse5 (+ v_aws_linked_list_front_~list.offset_BEFORE_CALL_19 24))) (let ((.cse3 (select .cse4 .cse5))) (and (<= .cse3 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_20|) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_20| 2) v_aws_linked_list_front_~list.base_BEFORE_CALL_21) (= .cse4 (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_21 v_DerPreprocessor_9) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_20| v_DerPreprocessor_10) v_aws_linked_list_front_~list.base_BEFORE_CALL_21) .cse5 .cse3)) (<= 0 v_aws_linked_list_front_~list.offset_BEFORE_CALL_19))))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37| Int) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| Int)) (let ((.cse8 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|)) (.cse7 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_27| 24))) (let ((.cse6 (select .cse8 .cse7))) (and (<= .cse6 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17|) (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_27|) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37| v_DerPreprocessor_3) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_4) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|) .cse7 .cse6) .cse8))))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35| Int) (v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18| Int) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25| Int)) (let ((.cse11 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|)) (.cse9 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25| 24))) (let ((.cse10 (select .cse11 .cse9))) (and (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25|) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_5) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18| v_DerPreprocessor_6) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|) .cse9 .cse10) .cse11) (<= .cse10 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18|))))) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int)) (v_aws_linked_list_front_~list.base_BEFORE_CALL_22 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| Int) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_20 Int)) (let ((.cse14 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_22)) (.cse12 (+ v_aws_linked_list_front_~list.offset_BEFORE_CALL_20 24))) (let ((.cse13 (select .cse14 .cse12))) (and (<= 0 v_aws_linked_list_front_~list.offset_BEFORE_CALL_20) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_22 v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_22) .cse12 .cse13) .cse14) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| 2) v_aws_linked_list_front_~list.base_BEFORE_CALL_22) (<= .cse13 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16|)))))) is different from true [2024-11-08 17:36:36,224 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34| Int) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24| Int) (v_DerPreprocessor_7 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19| Int) (v_DerPreprocessor_8 (Array Int Int))) (let ((.cse1 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|)) (.cse2 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24| 24))) (let ((.cse0 (select .cse1 .cse2))) (and (<= .cse0 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19|) (= .cse1 (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34| v_DerPreprocessor_7) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19| v_DerPreprocessor_8) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|) .cse2 .cse0)) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_19| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_34|) (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_24|))))) (exists ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_20| Int) (v_DerPreprocessor_10 (Array Int Int)) (v_aws_linked_list_front_~list.base_BEFORE_CALL_21 Int) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_19 Int) (v_DerPreprocessor_9 (Array Int Int))) (let ((.cse4 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_21)) (.cse5 (+ v_aws_linked_list_front_~list.offset_BEFORE_CALL_19 24))) (let ((.cse3 (select .cse4 .cse5))) (and (<= .cse3 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_20|) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_20| 2) v_aws_linked_list_front_~list.base_BEFORE_CALL_21) (= .cse4 (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_21 v_DerPreprocessor_9) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_20| v_DerPreprocessor_10) v_aws_linked_list_front_~list.base_BEFORE_CALL_21) .cse5 .cse3)) (<= 0 v_aws_linked_list_front_~list.offset_BEFORE_CALL_19))))) (exists ((v_DerPreprocessor_3 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37| Int) (v_DerPreprocessor_4 (Array Int Int)) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| Int)) (let ((.cse8 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|)) (.cse7 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_27| 24))) (let ((.cse6 (select .cse8 .cse7))) (and (<= .cse6 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17|) (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_27|) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37| v_DerPreprocessor_3) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_17| v_DerPreprocessor_4) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_37|) .cse7 .cse6) .cse8))))) (exists ((|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35| Int) (v_DerPreprocessor_5 (Array Int Int)) (v_DerPreprocessor_6 (Array Int Int)) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18| Int) (|v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25| Int)) (let ((.cse11 (select |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|)) (.cse9 (+ |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25| 24))) (let ((.cse10 (select .cse11 .cse9))) (and (<= 0 |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset_BEFORE_CALL_25|) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18| 2) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|) (= (store (select (store (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35| v_DerPreprocessor_5) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18| v_DerPreprocessor_6) |v_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base_BEFORE_CALL_35|) .cse9 .cse10) .cse11) (<= .cse10 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_18|))))) (not (= (mod |c_assume_abort_if_not_#in~cond| 256) 0)) (exists ((v_DerPreprocessor_1 (Array Int Int)) (v_DerPreprocessor_2 (Array Int Int)) (v_aws_linked_list_front_~list.base_BEFORE_CALL_22 Int) (|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| Int) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_20 Int)) (let ((.cse14 (select |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_22)) (.cse12 (+ v_aws_linked_list_front_~list.offset_BEFORE_CALL_20 24))) (let ((.cse13 (select .cse14 .cse12))) (and (<= 0 v_aws_linked_list_front_~list.offset_BEFORE_CALL_20) (= (store (select (store (store |c_#memory_$Pointer$#2.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_22 v_DerPreprocessor_1) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| v_DerPreprocessor_2) v_aws_linked_list_front_~list.base_BEFORE_CALL_22) .cse12 .cse13) .cse14) (<= (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16| 2) v_aws_linked_list_front_~list.base_BEFORE_CALL_22) (<= .cse13 |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_16|)))))) is different from true [2024-11-08 17:36:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 12 not checked. [2024-11-08 17:36:36,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:36:37,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441385709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:37,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:36:37,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19] total 25 [2024-11-08 17:36:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221580737] [2024-11-08 17:36:37,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:36:37,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:36:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:36:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:36:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=981, Unknown=8, NotChecked=330, Total=1406 [2024-11-08 17:36:37,710 INFO L87 Difference]: Start difference. First operand 192 states and 254 transitions. Second operand has 25 states, 22 states have (on average 5.090909090909091) internal successors, (112), 20 states have internal predecessors, (112), 10 states have call successors, (26), 7 states have call predecessors, (26), 8 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-08 17:36:38,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:36:47,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:36:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:36:48,949 INFO L93 Difference]: Finished difference Result 443 states and 591 transitions. [2024-11-08 17:36:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:36:48,950 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 5.090909090909091) internal successors, (112), 20 states have internal predecessors, (112), 10 states have call successors, (26), 7 states have call predecessors, (26), 8 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 102 [2024-11-08 17:36:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:36:48,953 INFO L225 Difference]: With dead ends: 443 [2024-11-08 17:36:48,953 INFO L226 Difference]: Without dead ends: 280 [2024-11-08 17:36:48,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=138, Invalid=1760, Unknown=14, NotChecked=440, Total=2352 [2024-11-08 17:36:48,955 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 40 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 8 mSolverCounterUnsat, 33 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 33 IncrementalHoareTripleChecker+Unknown, 1389 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:36:48,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1420 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 747 Invalid, 33 Unknown, 1389 Unchecked, 5.9s Time] [2024-11-08 17:36:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-08 17:36:49,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 278. [2024-11-08 17:36:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 200 states have (on average 1.235) internal successors, (247), 202 states have internal predecessors, (247), 50 states have call successors, (50), 25 states have call predecessors, (50), 27 states have return successors, (62), 50 states have call predecessors, (62), 48 states have call successors, (62) [2024-11-08 17:36:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 359 transitions. [2024-11-08 17:36:49,008 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 359 transitions. Word has length 102 [2024-11-08 17:36:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:36:49,009 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 359 transitions. [2024-11-08 17:36:49,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 5.090909090909091) internal successors, (112), 20 states have internal predecessors, (112), 10 states have call successors, (26), 7 states have call predecessors, (26), 8 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2024-11-08 17:36:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 359 transitions. [2024-11-08 17:36:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:36:49,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:36:49,011 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:36:49,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 17:36:49,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 17:36:49,212 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:36:49,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:36:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash -779547930, now seen corresponding path program 1 times [2024-11-08 17:36:49,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:36:49,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139803025] [2024-11-08 17:36:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:49,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:36:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:36:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:36:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:36:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:36:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:36:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:36:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:36:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 17:36:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:36:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-08 17:36:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 17:36:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-08 17:36:49,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:36:49,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139803025] [2024-11-08 17:36:49,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139803025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:49,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985003714] [2024-11-08 17:36:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:36:49,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:36:49,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:36:49,952 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:36:49,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:36:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:36:50,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-08 17:36:50,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:36:50,262 INFO L378 Elim1Store]: Elim1 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 [2024-11-08 17:36:50,533 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:36:50,533 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 11 [2024-11-08 17:36:50,543 INFO L378 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-08 17:36:50,549 INFO L378 Elim1Store]: Elim1 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 16 treesize of output 11 [2024-11-08 17:36:50,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 16 [2024-11-08 17:36:50,569 INFO L378 Elim1Store]: Elim1 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 16 treesize of output 11 [2024-11-08 17:36:50,654 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-08 17:36:50,655 INFO L378 Elim1Store]: Elim1 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 101 treesize of output 54 [2024-11-08 17:36:50,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:36:50,665 INFO L378 Elim1Store]: Elim1 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 30 treesize of output 27 [2024-11-08 17:36:50,669 INFO L378 Elim1Store]: Elim1 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 18 treesize of output 11 [2024-11-08 17:36:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-08 17:36:52,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:36:54,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:54,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 183 treesize of output 144 [2024-11-08 17:36:54,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:54,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 172 [2024-11-08 17:36:54,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:54,095 INFO L378 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 662 treesize of output 596 [2024-11-08 17:36:54,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:54,126 INFO L378 Elim1Store]: Elim1 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 1161 treesize of output 1109 [2024-11-08 17:36:54,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:54,222 INFO L378 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 1156 treesize of output 1162 [2024-11-08 17:36:54,282 INFO L378 Elim1Store]: Elim1 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 999 treesize of output 991 [2024-11-08 17:36:55,690 INFO L378 Elim1Store]: Elim1 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 6 treesize of output 4 [2024-11-08 17:36:55,747 INFO L378 Elim1Store]: Elim1 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 6 treesize of output 4 [2024-11-08 17:36:55,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:55,772 INFO L378 Elim1Store]: Elim1 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 176 treesize of output 180 [2024-11-08 17:36:55,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:55,873 INFO L378 Elim1Store]: Elim1 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 324 treesize of output 324 [2024-11-08 17:36:56,182 INFO L378 Elim1Store]: Elim1 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 8 treesize of output 4 [2024-11-08 17:36:56,367 INFO L378 Elim1Store]: Elim1 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 8 treesize of output 4 [2024-11-08 17:36:56,377 INFO L378 Elim1Store]: Elim1 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 24 treesize of output 20 [2024-11-08 17:36:56,401 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:36:56,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 166 [2024-11-08 17:36:57,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985003714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:36:57,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:36:57,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17] total 23 [2024-11-08 17:36:57,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111233772] [2024-11-08 17:36:57,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:36:57,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 17:36:57,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:36:57,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 17:36:57,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1118, Unknown=14, NotChecked=0, Total=1260 [2024-11-08 17:36:57,162 INFO L87 Difference]: Start difference. First operand 278 states and 359 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 22 states have internal predecessors, (114), 7 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-08 17:37:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:00,632 INFO L93 Difference]: Finished difference Result 548 states and 744 transitions. [2024-11-08 17:37:00,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 17:37:00,633 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 22 states have internal predecessors, (114), 7 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 102 [2024-11-08 17:37:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:00,636 INFO L225 Difference]: With dead ends: 548 [2024-11-08 17:37:00,636 INFO L226 Difference]: Without dead ends: 348 [2024-11-08 17:37:00,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 188 SyntacticMatches, 15 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=483, Invalid=3661, Unknown=16, NotChecked=0, Total=4160 [2024-11-08 17:37:00,639 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 399 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:00,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1042 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 17:37:00,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-08 17:37:00,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 303. [2024-11-08 17:37:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 221 states have (on average 1.2352941176470589) internal successors, (273), 227 states have internal predecessors, (273), 54 states have call successors, (54), 25 states have call predecessors, (54), 27 states have return successors, (72), 50 states have call predecessors, (72), 52 states have call successors, (72) [2024-11-08 17:37:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 399 transitions. [2024-11-08 17:37:00,694 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 399 transitions. Word has length 102 [2024-11-08 17:37:00,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:00,695 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 399 transitions. [2024-11-08 17:37:00,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 22 states have internal predecessors, (114), 7 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-08 17:37:00,695 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 399 transitions. [2024-11-08 17:37:00,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:37:00,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:00,697 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:00,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:37:00,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 17:37:00,901 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:00,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:00,902 INFO L85 PathProgramCache]: Analyzing trace with hash -493302686, now seen corresponding path program 1 times [2024-11-08 17:37:00,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:00,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150783494] [2024-11-08 17:37:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:00,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:37:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:37:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:37:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:37:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:37:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:37:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:37:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 17:37:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-08 17:37:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 17:37:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-08 17:37:01,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150783494] [2024-11-08 17:37:01,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150783494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:01,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025511357] [2024-11-08 17:37:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:01,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:01,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:01,185 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:01,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:37:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:37:01,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 17:37:01,471 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:37:01,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025511357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:01,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:37:01,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-08 17:37:01,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976251171] [2024-11-08 17:37:01,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:01,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:37:01,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:01,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:37:01,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:37:01,473 INFO L87 Difference]: Start difference. First operand 303 states and 399 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 17:37:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:01,544 INFO L93 Difference]: Finished difference Result 498 states and 669 transitions. [2024-11-08 17:37:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:37:01,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-11-08 17:37:01,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:01,548 INFO L225 Difference]: With dead ends: 498 [2024-11-08 17:37:01,548 INFO L226 Difference]: Without dead ends: 304 [2024-11-08 17:37:01,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:37:01,551 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:01,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 357 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:37:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-08 17:37:01,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2024-11-08 17:37:01,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 221 states have (on average 1.2262443438914028) internal successors, (271), 227 states have internal predecessors, (271), 54 states have call successors, (54), 25 states have call predecessors, (54), 27 states have return successors, (72), 50 states have call predecessors, (72), 52 states have call successors, (72) [2024-11-08 17:37:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 397 transitions. [2024-11-08 17:37:01,619 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 397 transitions. Word has length 102 [2024-11-08 17:37:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:01,619 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 397 transitions. [2024-11-08 17:37:01,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 17:37:01,620 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 397 transitions. [2024-11-08 17:37:01,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:37:01,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:01,622 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:01,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 17:37:01,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:37:01,822 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:01,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash -291478752, now seen corresponding path program 1 times [2024-11-08 17:37:01,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:01,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879979779] [2024-11-08 17:37:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:01,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:37:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:37:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:37:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:37:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:01,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:37:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:02,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:37:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:02,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:37:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:02,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 17:37:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:02,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:02,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-08 17:37:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:02,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 17:37:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-08 17:37:02,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:02,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879979779] [2024-11-08 17:37:02,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879979779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:02,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511724181] [2024-11-08 17:37:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:02,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:02,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:02,057 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:02,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:37:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:02,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:37:02,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-08 17:37:02,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:37:02,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511724181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:02,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:37:02,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-08 17:37:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146581201] [2024-11-08 17:37:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:02,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:37:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:02,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:37:02,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:37:02,344 INFO L87 Difference]: Start difference. First operand 303 states and 397 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 17:37:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:02,419 INFO L93 Difference]: Finished difference Result 491 states and 660 transitions. [2024-11-08 17:37:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:37:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-11-08 17:37:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:02,423 INFO L225 Difference]: With dead ends: 491 [2024-11-08 17:37:02,423 INFO L226 Difference]: Without dead ends: 297 [2024-11-08 17:37:02,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:37:02,425 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 1 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:02,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 355 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:37:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-08 17:37:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 291. [2024-11-08 17:37:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 209 states have (on average 1.2105263157894737) internal successors, (253), 215 states have internal predecessors, (253), 54 states have call successors, (54), 25 states have call predecessors, (54), 27 states have return successors, (72), 50 states have call predecessors, (72), 52 states have call successors, (72) [2024-11-08 17:37:02,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 379 transitions. [2024-11-08 17:37:02,489 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 379 transitions. Word has length 102 [2024-11-08 17:37:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:02,489 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 379 transitions. [2024-11-08 17:37:02,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 17:37:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 379 transitions. [2024-11-08 17:37:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 17:37:02,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:02,492 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:02,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 17:37:02,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 17:37:02,696 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:02,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:02,697 INFO L85 PathProgramCache]: Analyzing trace with hash -99740841, now seen corresponding path program 1 times [2024-11-08 17:37:02,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:02,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315118698] [2024-11-08 17:37:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:02,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:03,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:37:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:03,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:37:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:03,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:37:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:03,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:03,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:37:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:03,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:37:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:04,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:37:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:04,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:37:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:04,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 17:37:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:04,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:04,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-08 17:37:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:04,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-08 17:37:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-08 17:37:04,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:04,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315118698] [2024-11-08 17:37:04,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315118698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:04,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463178339] [2024-11-08 17:37:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:04,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:04,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:04,453 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:04,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:37:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:04,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-08 17:37:04,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:04,793 INFO L378 Elim1Store]: Elim1 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 [2024-11-08 17:37:05,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 16 [2024-11-08 17:37:05,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:05,212 INFO L378 Elim1Store]: Elim1 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 16 treesize of output 11 [2024-11-08 17:37:05,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:05,222 INFO L378 Elim1Store]: Elim1 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 11 treesize of output 7 [2024-11-08 17:37:05,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:05,290 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 36 [2024-11-08 17:37:05,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:05,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:05,298 INFO L378 Elim1Store]: Elim1 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 46 treesize of output 39 [2024-11-08 17:37:05,311 INFO L378 Elim1Store]: Elim1 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 30 treesize of output 19 [2024-11-08 17:37:05,321 INFO L378 Elim1Store]: Elim1 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 16 treesize of output 1 [2024-11-08 17:37:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 56 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 17:37:11,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:12,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463178339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:12,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:37:12,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23] total 38 [2024-11-08 17:37:12,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225214250] [2024-11-08 17:37:12,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:37:12,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 17:37:12,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 17:37:12,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1804, Unknown=16, NotChecked=0, Total=1980 [2024-11-08 17:37:12,031 INFO L87 Difference]: Start difference. First operand 291 states and 379 transitions. Second operand has 38 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 32 states have internal predecessors, (134), 15 states have call successors, (27), 8 states have call predecessors, (27), 10 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) [2024-11-08 17:37:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:19,988 INFO L93 Difference]: Finished difference Result 578 states and 769 transitions. [2024-11-08 17:37:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 17:37:19,989 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 32 states have internal predecessors, (134), 15 states have call successors, (27), 8 states have call predecessors, (27), 10 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) Word has length 104 [2024-11-08 17:37:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:19,992 INFO L225 Difference]: With dead ends: 578 [2024-11-08 17:37:19,992 INFO L226 Difference]: Without dead ends: 391 [2024-11-08 17:37:19,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=525, Invalid=6200, Unknown=81, NotChecked=0, Total=6806 [2024-11-08 17:37:19,996 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 240 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 102 mSolverCounterUnsat, 100 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 100 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:19,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 2075 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1914 Invalid, 100 Unknown, 0 Unchecked, 4.2s Time] [2024-11-08 17:37:19,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-08 17:37:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 342. [2024-11-08 17:37:20,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 256 states have (on average 1.19921875) internal successors, (307), 259 states have internal predecessors, (307), 55 states have call successors, (55), 27 states have call predecessors, (55), 30 states have return successors, (74), 55 states have call predecessors, (74), 53 states have call successors, (74) [2024-11-08 17:37:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 436 transitions. [2024-11-08 17:37:20,079 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 436 transitions. Word has length 104 [2024-11-08 17:37:20,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:20,079 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 436 transitions. [2024-11-08 17:37:20,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 32 states have internal predecessors, (134), 15 states have call successors, (27), 8 states have call predecessors, (27), 10 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) [2024-11-08 17:37:20,080 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 436 transitions. [2024-11-08 17:37:20,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-08 17:37:20,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:20,082 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:20,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:37:20,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:37:20,283 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:20,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1531082291, now seen corresponding path program 1 times [2024-11-08 17:37:20,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:20,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058275631] [2024-11-08 17:37:20,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:20,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:37:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:37:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:37:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:37:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:37:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:37:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 17:37:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 17:37:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-08 17:37:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-11-08 17:37:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:37:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 17:37:22,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:22,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058275631] [2024-11-08 17:37:22,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058275631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:22,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360432669] [2024-11-08 17:37:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:22,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:22,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:22,382 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:22,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:37:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:22,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 17:37:22,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 17:37:23,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:37:23,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360432669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:23,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:37:23,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2024-11-08 17:37:23,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50663677] [2024-11-08 17:37:23,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:23,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:37:23,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:23,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:37:23,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:37:23,071 INFO L87 Difference]: Start difference. First operand 342 states and 436 transitions. Second operand has 12 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-08 17:37:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:23,707 INFO L93 Difference]: Finished difference Result 548 states and 709 transitions. [2024-11-08 17:37:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:37:23,708 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 114 [2024-11-08 17:37:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:23,710 INFO L225 Difference]: With dead ends: 548 [2024-11-08 17:37:23,711 INFO L226 Difference]: Without dead ends: 356 [2024-11-08 17:37:23,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2024-11-08 17:37:23,713 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 114 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:23,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 880 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:37:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-08 17:37:23,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 342. [2024-11-08 17:37:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 256 states have (on average 1.19921875) internal successors, (307), 259 states have internal predecessors, (307), 55 states have call successors, (55), 27 states have call predecessors, (55), 30 states have return successors, (74), 55 states have call predecessors, (74), 53 states have call successors, (74) [2024-11-08 17:37:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 436 transitions. [2024-11-08 17:37:23,809 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 436 transitions. Word has length 114 [2024-11-08 17:37:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:23,809 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 436 transitions. [2024-11-08 17:37:23,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 6 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-08 17:37:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 436 transitions. [2024-11-08 17:37:23,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-08 17:37:23,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:23,812 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:23,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 17:37:24,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 17:37:24,013 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:24,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:24,013 INFO L85 PathProgramCache]: Analyzing trace with hash -340355930, now seen corresponding path program 2 times [2024-11-08 17:37:24,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:24,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947976766] [2024-11-08 17:37:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:24,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:24,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:37:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:24,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:37:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:24,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:37:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:24,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:24,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:37:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:24,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:37:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:25,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:37:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:25,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 17:37:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:25,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:37:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:25,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:37:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:25,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:25,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 17:37:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:25,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-08 17:37:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-08 17:37:25,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:25,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947976766] [2024-11-08 17:37:25,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947976766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:25,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714679619] [2024-11-08 17:37:25,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:37:25,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:25,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:25,619 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:25,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:37:25,967 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:37:25,967 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:37:25,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-08 17:37:25,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:26,028 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:37:26,032 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:37:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-08 17:37:27,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 17:37:27,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714679619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:37:27,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:37:27,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 11] total 28 [2024-11-08 17:37:27,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494404311] [2024-11-08 17:37:27,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:37:27,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 17:37:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:27,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 17:37:27,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:37:27,750 INFO L87 Difference]: Start difference. First operand 342 states and 436 transitions. Second operand has 28 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-08 17:37:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:29,566 INFO L93 Difference]: Finished difference Result 633 states and 803 transitions. [2024-11-08 17:37:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 17:37:29,567 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 116 [2024-11-08 17:37:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:29,571 INFO L225 Difference]: With dead ends: 633 [2024-11-08 17:37:29,571 INFO L226 Difference]: Without dead ends: 448 [2024-11-08 17:37:29,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 235 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=353, Invalid=1903, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 17:37:29,573 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 188 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:29,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1595 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:37:29,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-11-08 17:37:29,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 340. [2024-11-08 17:37:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 253 states have (on average 1.173913043478261) internal successors, (297), 258 states have internal predecessors, (297), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (63), 52 states have call predecessors, (63), 52 states have call successors, (63) [2024-11-08 17:37:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 414 transitions. [2024-11-08 17:37:29,668 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 414 transitions. Word has length 116 [2024-11-08 17:37:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:29,669 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 414 transitions. [2024-11-08 17:37:29,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.888888888888889) internal successors, (105), 27 states have internal predecessors, (105), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-08 17:37:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 414 transitions. [2024-11-08 17:37:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-08 17:37:29,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:29,670 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:29,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 17:37:29,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 17:37:29,875 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:29,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:29,876 INFO L85 PathProgramCache]: Analyzing trace with hash -82190492, now seen corresponding path program 1 times [2024-11-08 17:37:29,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:29,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292693826] [2024-11-08 17:37:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:29,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:37:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:37:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:37:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:37:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:37:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:37:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 17:37:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:37:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:37:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 17:37:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-08 17:37:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-08 17:37:30,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:30,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292693826] [2024-11-08 17:37:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292693826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:30,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108996641] [2024-11-08 17:37:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:30,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:30,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:30,917 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:30,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:37:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:31,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-08 17:37:31,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:31,338 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:37:31,341 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:37:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 49 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 17:37:32,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-08 17:37:33,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108996641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:37:33,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:37:33,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 14] total 30 [2024-11-08 17:37:33,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578434982] [2024-11-08 17:37:33,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:37:33,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 17:37:33,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:33,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 17:37:33,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2024-11-08 17:37:33,827 INFO L87 Difference]: Start difference. First operand 340 states and 414 transitions. Second operand has 30 states, 29 states have (on average 4.275862068965517) internal successors, (124), 29 states have internal predecessors, (124), 13 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (25), 10 states have call predecessors, (25), 12 states have call successors, (25) [2024-11-08 17:37:37,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:37:41,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:37:45,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:37:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:49,114 INFO L93 Difference]: Finished difference Result 712 states and 917 transitions. [2024-11-08 17:37:49,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 17:37:49,115 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.275862068965517) internal successors, (124), 29 states have internal predecessors, (124), 13 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (25), 10 states have call predecessors, (25), 12 states have call successors, (25) Word has length 116 [2024-11-08 17:37:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:49,118 INFO L225 Difference]: With dead ends: 712 [2024-11-08 17:37:49,118 INFO L226 Difference]: Without dead ends: 476 [2024-11-08 17:37:49,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 235 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=347, Invalid=2845, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 17:37:49,121 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 244 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 68 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:49,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1797 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1773 Invalid, 3 Unknown, 0 Unchecked, 14.0s Time] [2024-11-08 17:37:49,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-08 17:37:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 418. [2024-11-08 17:37:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 319 states have (on average 1.188087774294671) internal successors, (379), 328 states have internal predecessors, (379), 60 states have call successors, (60), 33 states have call predecessors, (60), 38 states have return successors, (96), 56 states have call predecessors, (96), 58 states have call successors, (96) [2024-11-08 17:37:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 535 transitions. [2024-11-08 17:37:49,222 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 535 transitions. Word has length 116 [2024-11-08 17:37:49,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:49,222 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 535 transitions. [2024-11-08 17:37:49,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.275862068965517) internal successors, (124), 29 states have internal predecessors, (124), 13 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (25), 10 states have call predecessors, (25), 12 states have call successors, (25) [2024-11-08 17:37:49,223 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 535 transitions. [2024-11-08 17:37:49,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-08 17:37:49,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:49,224 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:49,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 17:37:49,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 17:37:49,425 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:49,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:49,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1093307742, now seen corresponding path program 1 times [2024-11-08 17:37:49,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:49,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731218764] [2024-11-08 17:37:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:49,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:49,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:37:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:49,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:37:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:49,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-08 17:37:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:49,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:49,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-08 17:37:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:49,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-08 17:37:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:50,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:37:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:50,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 17:37:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:50,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 17:37:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:50,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:37:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:50,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:50,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-08 17:37:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:50,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-08 17:37:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 17:37:50,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:50,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731218764] [2024-11-08 17:37:50,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731218764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393369686] [2024-11-08 17:37:50,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:50,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:50,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:50,215 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:50,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:37:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:50,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:37:50,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-08 17:37:50,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:37:50,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393369686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:37:50,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:37:50,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-08 17:37:50,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978007678] [2024-11-08 17:37:50,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:37:50,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:37:50,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:37:50,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:37:50,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:37:50,767 INFO L87 Difference]: Start difference. First operand 418 states and 535 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-08 17:37:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:37:51,193 INFO L93 Difference]: Finished difference Result 803 states and 1064 transitions. [2024-11-08 17:37:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:37:51,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 116 [2024-11-08 17:37:51,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:37:51,201 INFO L225 Difference]: With dead ends: 803 [2024-11-08 17:37:51,201 INFO L226 Difference]: Without dead ends: 375 [2024-11-08 17:37:51,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:37:51,203 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 150 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:37:51,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 511 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:37:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-08 17:37:51,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2024-11-08 17:37:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 279 states have (on average 1.157706093189964) internal successors, (323), 287 states have internal predecessors, (323), 58 states have call successors, (58), 33 states have call predecessors, (58), 37 states have return successors, (87), 54 states have call predecessors, (87), 56 states have call successors, (87) [2024-11-08 17:37:51,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 468 transitions. [2024-11-08 17:37:51,320 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 468 transitions. Word has length 116 [2024-11-08 17:37:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:37:51,320 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 468 transitions. [2024-11-08 17:37:51,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 7 states have internal predecessors, (58), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-08 17:37:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 468 transitions. [2024-11-08 17:37:51,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-08 17:37:51,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:37:51,323 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:37:51,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 17:37:51,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:37:51,524 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:37:51,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:37:51,525 INFO L85 PathProgramCache]: Analyzing trace with hash -198208667, now seen corresponding path program 1 times [2024-11-08 17:37:51,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:37:51,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503249961] [2024-11-08 17:37:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:51,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:37:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:53,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 17:37:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:53,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-08 17:37:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:53,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-08 17:37:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:53,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:53,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 17:37:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:53,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-08 17:37:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:53,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 17:37:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:53,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-08 17:37:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:53,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-08 17:37:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:54,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-08 17:37:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:54,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-08 17:37:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:54,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-08 17:37:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:54,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-08 17:37:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:54,038 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-08 17:37:54,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:37:54,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503249961] [2024-11-08 17:37:54,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503249961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:37:54,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911697549] [2024-11-08 17:37:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:37:54,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:37:54,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:37:54,041 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:37:54,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:37:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:37:54,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-08 17:37:54,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:37:54,478 INFO L378 Elim1Store]: Elim1 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 [2024-11-08 17:37:54,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 16 [2024-11-08 17:37:54,857 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 17:37:54,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-08 17:37:54,892 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-08 17:37:54,892 INFO L378 Elim1Store]: Elim1 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 [2024-11-08 17:37:54,914 INFO L378 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-08 17:37:54,920 INFO L378 Elim1Store]: Elim1 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 16 treesize of output 11 [2024-11-08 17:37:55,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:55,047 INFO L378 Elim1Store]: Elim1 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 57 treesize of output 44 [2024-11-08 17:37:55,054 INFO L378 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 32 treesize of output 30 [2024-11-08 17:37:55,060 INFO L378 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 27 treesize of output 27 [2024-11-08 17:37:55,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:55,077 INFO L378 Elim1Store]: Elim1 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 20 treesize of output 10 [2024-11-08 17:37:55,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:55,105 INFO L349 Elim1Store]: treesize reduction 44, result has 10.2 percent of original size [2024-11-08 17:37:55,106 INFO L378 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 71 treesize of output 50 [2024-11-08 17:37:55,112 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2024-11-08 17:37:55,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:55,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 27 treesize of output 25 [2024-11-08 17:37:55,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:55,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 10 [2024-11-08 17:37:55,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:55,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:55,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 37 [2024-11-08 17:37:55,260 INFO L378 Elim1Store]: Elim1 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 18 treesize of output 11 [2024-11-08 17:37:55,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:37:55,269 INFO L378 Elim1Store]: Elim1 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 67 treesize of output 23 [2024-11-08 17:37:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 52 proven. 23 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 17:37:56,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:37:57,566 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1705 Int) (v_ArrVal_1704 Int) (v_ArrVal_1707 Int) (v_ArrVal_1706 (Array Int Int))) (not (= (+ 16 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|) (let ((.cse2 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_1706))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse2 v_ArrVal_1707))))) (select (select .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_1705)))) (store .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse2 v_ArrVal_1704))) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))))))) is different from false [2024-11-08 17:37:57,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:37:57,592 INFO L378 Elim1Store]: Elim1 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 111 [2024-11-08 17:37:57,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:37:57,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 137 [2024-11-08 17:37:57,814 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:37:57,815 INFO L378 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 70190 treesize of output 64818 [2024-11-08 17:37:57,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:37:57,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 4046 treesize of output 3031 [2024-11-08 17:37:59,725 INFO L349 Elim1Store]: treesize reduction 214, result has 57.6 percent of original size [2024-11-08 17:37:59,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 16591431 treesize of output 15971175 [2024-11-08 17:38:02,720 INFO L349 Elim1Store]: treesize reduction 94, result has 73.2 percent of original size [2024-11-08 17:38:02,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 27918 treesize of output 26967 [2024-11-08 17:38:07,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:38:07,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 23348 treesize of output 22581 [2024-11-08 17:38:09,099 INFO L378 Elim1Store]: Elim1 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 23049 treesize of output 22811 [2024-11-08 17:38:09,859 INFO L378 Elim1Store]: Elim1 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 24199 treesize of output 23737 [2024-11-08 17:42:34,307 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-08 17:42:34,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-08 17:42:34,309 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-08 17:42:34,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 17:42:34,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:42:34,510 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 68 more [2024-11-08 17:42:34,516 INFO L158 Benchmark]: Toolchain (without parser) took 406823.00ms. Allocated memory was 165.7MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 132.0MB in the beginning and 775.5MB in the end (delta: -643.5MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-08 17:42:34,516 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 123.7MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:42:34,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2832.71ms. Allocated memory was 165.7MB in the beginning and 220.2MB in the end (delta: 54.5MB). Free memory was 132.0MB in the beginning and 172.3MB in the end (delta: -40.3MB). Peak memory consumption was 87.3MB. Max. memory is 16.1GB. [2024-11-08 17:42:34,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 158.39ms. Allocated memory is still 220.2MB. Free memory was 172.3MB in the beginning and 167.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 17:42:34,517 INFO L158 Benchmark]: Boogie Preprocessor took 139.38ms. Allocated memory is still 220.2MB. Free memory was 167.1MB in the beginning and 161.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-08 17:42:34,517 INFO L158 Benchmark]: RCFGBuilder took 808.00ms. Allocated memory is still 220.2MB. Free memory was 161.9MB in the beginning and 131.5MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-08 17:42:34,518 INFO L158 Benchmark]: TraceAbstraction took 402872.24ms. Allocated memory was 220.2MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 131.5MB in the beginning and 775.5MB in the end (delta: -644.0MB). Peak memory consumption was 996.7MB. Max. memory is 16.1GB. [2024-11-08 17:42:34,520 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 123.7MB. Free memory is still 96.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2832.71ms. Allocated memory was 165.7MB in the beginning and 220.2MB in the end (delta: 54.5MB). Free memory was 132.0MB in the beginning and 172.3MB in the end (delta: -40.3MB). Peak memory consumption was 87.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 158.39ms. Allocated memory is still 220.2MB. Free memory was 172.3MB in the beginning and 167.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 139.38ms. Allocated memory is still 220.2MB. Free memory was 167.1MB in the beginning and 161.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 808.00ms. Allocated memory is still 220.2MB. Free memory was 161.9MB in the beginning and 131.5MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 402872.24ms. Allocated memory was 220.2MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 131.5MB in the beginning and 775.5MB in the end (delta: -644.0MB). Peak memory consumption was 996.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --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 64bit --witnessprinter.graph.data.programhash d60183102582204ad3b2c5c2967c5e39411556c79eb47cc4f179f5b1b7f07a77 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:42:37,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:42:37,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-08 17:42:37,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:42:37,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:42:37,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:42:37,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:42:37,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:42:37,207 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:42:37,208 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:42:37,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:42:37,209 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:42:37,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:42:37,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:42:37,215 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:42:37,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:42:37,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:42:37,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:42:37,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:42:37,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:42:37,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:42:37,221 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:42:37,221 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 17:42:37,222 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:42:37,222 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 17:42:37,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:42:37,223 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:42:37,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:42:37,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:42:37,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:42:37,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:42:37,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:42:37,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:42:37,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:42:37,227 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:42:37,228 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 17:42:37,229 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 17:42:37,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:42:37,230 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:42:37,230 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:42:37,230 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:42:37,231 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d60183102582204ad3b2c5c2967c5e39411556c79eb47cc4f179f5b1b7f07a77 [2024-11-08 17:42:37,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:42:37,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:42:37,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:42:37,681 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:42:37,682 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:42:37,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i Unable to find full path for "g++" [2024-11-08 17:42:39,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:42:40,455 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:42:40,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i [2024-11-08 17:42:40,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/data/eb222a318/15b9a1fb13684999b5b58ba035ef9f00/FLAG1e83f01e0 [2024-11-08 17:42:40,527 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/data/eb222a318/15b9a1fb13684999b5b58ba035ef9f00 [2024-11-08 17:42:40,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:42:40,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:42:40,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:42:40,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:42:40,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:42:40,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:42:40" (1/1) ... [2024-11-08 17:42:40,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341442ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:40, skipping insertion in model container [2024-11-08 17:42:40,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:42:40" (1/1) ... [2024-11-08 17:42:40,758 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:42:41,090 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4495,4508] [2024-11-08 17:42:41,099 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4555,4568] [2024-11-08 17:42:42,140 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,320 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,321 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,322 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,344 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,350 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,351 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,353 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,354 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,355 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,357 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,362 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,366 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,374 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,374 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,396 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,396 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,397 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,397 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,401 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,402 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,402 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,402 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,407 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,408 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,410 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,410 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,411 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,411 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:42,898 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,899 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,900 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:42,900 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,098 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,121 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[150660,150673] [2024-11-08 17:42:43,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:42:43,165 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-08 17:42:43,240 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:42:43,246 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4495,4508] [2024-11-08 17:42:43,248 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4555,4568] [2024-11-08 17:42:43,293 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,335 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,336 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,336 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,351 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,353 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,353 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,354 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,355 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,355 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,356 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,359 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,359 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,361 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,362 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,369 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,369 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,370 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,370 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,372 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,373 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,373 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,373 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,375 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,376 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,377 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,377 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,377 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,378 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,446 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,447 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,448 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,448 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,497 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:42:43,507 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[150660,150673] [2024-11-08 17:42:43,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:42:43,515 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:42:43,535 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4495,4508] [2024-11-08 17:42:43,539 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[4555,4568] [2024-11-08 17:42:43,642 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,643 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,643 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,645 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,645 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,659 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,659 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,660 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,662 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,663 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,664 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,665 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,665 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-08 17:42:43,789 WARN L250 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_13847366-bf42-4eba-a8a1-1b3676482d2a/sv-benchmarks/c/aws-c-common/aws_linked_list_front_harness.i[150660,150673] [2024-11-08 17:42:43,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:42:44,112 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:42:44,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44 WrapperNode [2024-11-08 17:42:44,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:42:44,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:42:44,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:42:44,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:42:44,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,310 INFO L138 Inliner]: procedures = 687, calls = 1043, calls flagged for inlining = 51, calls inlined = 5, statements flattened = 134 [2024-11-08 17:42:44,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:42:44,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:42:44,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:42:44,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:42:44,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,393 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 20, 5]. 74 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 6 writes are split as follows [0, 6, 0]. [2024-11-08 17:42:44,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:42:44,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:42:44,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:42:44,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:42:44,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (1/1) ... [2024-11-08 17:42:44,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:42:44,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:44,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:42:44,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:42:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:42:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 17:42:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-08 17:42:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-08 17:42:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 17:42:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 17:42:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-08 17:42:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-08 17:42:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:42:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-08 17:42:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-08 17:42:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:42:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:42:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:42:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:42:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_front [2024-11-08 17:42:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_front [2024-11-08 17:42:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:42:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:42:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2024-11-08 17:42:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2024-11-08 17:42:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 17:42:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 17:42:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:42:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:42:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:42:44,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:42:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-08 17:42:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-08 17:42:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-08 17:42:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-08 17:42:44,590 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-08 17:42:44,590 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-08 17:42:44,591 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-08 17:42:45,026 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:42:45,030 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:42:45,602 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-11-08 17:42:45,602 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:42:45,625 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:42:45,625 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:42:45,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:42:45 BoogieIcfgContainer [2024-11-08 17:42:45,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:42:45,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:42:45,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:42:45,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:42:45,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:42:40" (1/3) ... [2024-11-08 17:42:45,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1894f499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:42:45, skipping insertion in model container [2024-11-08 17:42:45,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:42:44" (2/3) ... [2024-11-08 17:42:45,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1894f499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:42:45, skipping insertion in model container [2024-11-08 17:42:45,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:42:45" (3/3) ... [2024-11-08 17:42:45,640 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_front_harness.i [2024-11-08 17:42:45,674 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:42:45,674 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:42:45,775 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:42:45,782 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3730dc2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:42:45,783 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:42:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 66 states have internal predecessors, (84), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-08 17:42:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-08 17:42:45,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:42:45,810 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:45,811 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:42:45,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash -899777360, now seen corresponding path program 1 times [2024-11-08 17:42:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:42:45,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614893661] [2024-11-08 17:42:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:45,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:45,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:45,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:45,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:42:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:46,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 17:42:46,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:42:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:42:46,233 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:42:46,234 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:42:46,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614893661] [2024-11-08 17:42:46,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614893661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:42:46,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:42:46,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:42:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247017974] [2024-11-08 17:42:46,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:42:46,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:42:46,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:42:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:42:46,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:42:46,289 INFO L87 Difference]: Start difference. First operand has 99 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 66 states have internal predecessors, (84), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-08 17:42:46,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:42:46,360 INFO L93 Difference]: Finished difference Result 190 states and 270 transitions. [2024-11-08 17:42:46,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:42:46,366 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2024-11-08 17:42:46,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:42:46,380 INFO L225 Difference]: With dead ends: 190 [2024-11-08 17:42:46,380 INFO L226 Difference]: Without dead ends: 94 [2024-11-08 17:42:46,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:42:46,395 INFO L432 NwaCegarLoop]: 130 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, 130 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 [2024-11-08 17:42:46,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:42:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-08 17:42:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-08 17:42:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.278688524590164) internal successors, (78), 62 states have internal predecessors, (78), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-08 17:42:46,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 125 transitions. [2024-11-08 17:42:46,478 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 125 transitions. Word has length 84 [2024-11-08 17:42:46,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:42:46,480 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 125 transitions. [2024-11-08 17:42:46,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-08 17:42:46,481 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 125 transitions. [2024-11-08 17:42:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-08 17:42:46,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:42:46,498 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:46,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:42:46,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:46,699 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:42:46,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:46,700 INFO L85 PathProgramCache]: Analyzing trace with hash -900879384, now seen corresponding path program 1 times [2024-11-08 17:42:46,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:42:46,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085409268] [2024-11-08 17:42:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:46,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:46,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:46,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:46,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:42:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:46,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:42:46,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:42:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 17:42:47,099 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:42:47,099 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:42:47,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085409268] [2024-11-08 17:42:47,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085409268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:42:47,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:42:47,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:42:47,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328781390] [2024-11-08 17:42:47,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:42:47,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:42:47,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:42:47,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:42:47,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:42:47,105 INFO L87 Difference]: Start difference. First operand 94 states and 125 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-08 17:42:47,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:42:47,236 INFO L93 Difference]: Finished difference Result 171 states and 229 transitions. [2024-11-08 17:42:47,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:42:47,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 84 [2024-11-08 17:42:47,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:42:47,241 INFO L225 Difference]: With dead ends: 171 [2024-11-08 17:42:47,241 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 17:42:47,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:42:47,244 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:42:47,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:42:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 17:42:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-08 17:42:47,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 64 states have internal predecessors, (79), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-08 17:42:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 128 transitions. [2024-11-08 17:42:47,279 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 128 transitions. Word has length 84 [2024-11-08 17:42:47,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:42:47,280 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 128 transitions. [2024-11-08 17:42:47,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-08 17:42:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 128 transitions. [2024-11-08 17:42:47,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-08 17:42:47,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:42:47,287 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:47,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:42:47,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:47,488 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:42:47,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:47,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1409685828, now seen corresponding path program 1 times [2024-11-08 17:42:47,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:42:47,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685345299] [2024-11-08 17:42:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:47,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:47,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:47,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:47,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:42:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:47,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:42:47,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:42:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 17:42:48,048 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:42:48,048 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:42:48,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685345299] [2024-11-08 17:42:48,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685345299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:42:48,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:42:48,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:42:48,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573459563] [2024-11-08 17:42:48,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:42:48,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:42:48,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:42:48,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:42:48,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:42:48,057 INFO L87 Difference]: Start difference. First operand 96 states and 128 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:42:48,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:42:48,454 INFO L93 Difference]: Finished difference Result 178 states and 238 transitions. [2024-11-08 17:42:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:42:48,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 86 [2024-11-08 17:42:48,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:42:48,457 INFO L225 Difference]: With dead ends: 178 [2024-11-08 17:42:48,457 INFO L226 Difference]: Without dead ends: 98 [2024-11-08 17:42:48,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:42:48,460 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 35 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:42:48,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 699 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:42:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-08 17:42:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-11-08 17:42:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 64 states have internal predecessors, (78), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-08 17:42:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 127 transitions. [2024-11-08 17:42:48,492 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 127 transitions. Word has length 86 [2024-11-08 17:42:48,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:42:48,492 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 127 transitions. [2024-11-08 17:42:48,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:42:48,493 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 127 transitions. [2024-11-08 17:42:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-08 17:42:48,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:42:48,497 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:48,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:42:48,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:48,702 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:42:48,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1432292192, now seen corresponding path program 1 times [2024-11-08 17:42:48,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:42:48,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138875230] [2024-11-08 17:42:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:48,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:48,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:48,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:48,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:42:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:48,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:42:48,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:42:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 17:42:49,242 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:42:49,243 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:42:49,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138875230] [2024-11-08 17:42:49,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138875230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:42:49,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:42:49,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 17:42:49,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83282587] [2024-11-08 17:42:49,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:42:49,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:42:49,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:42:49,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:42:49,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:42:49,248 INFO L87 Difference]: Start difference. First operand 96 states and 127 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:42:49,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:42:49,759 INFO L93 Difference]: Finished difference Result 185 states and 248 transitions. [2024-11-08 17:42:49,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:42:49,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 88 [2024-11-08 17:42:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:42:49,767 INFO L225 Difference]: With dead ends: 185 [2024-11-08 17:42:49,767 INFO L226 Difference]: Without dead ends: 104 [2024-11-08 17:42:49,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:42:49,769 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 47 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:42:49,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 773 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:42:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-08 17:42:49,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2024-11-08 17:42:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.25) internal successors, (80), 66 states have internal predecessors, (80), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-08 17:42:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2024-11-08 17:42:49,805 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 88 [2024-11-08 17:42:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:42:49,806 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2024-11-08 17:42:49,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:42:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2024-11-08 17:42:49,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 17:42:49,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:42:49,808 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:49,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:42:50,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:50,012 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:42:50,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:50,013 INFO L85 PathProgramCache]: Analyzing trace with hash 6514961, now seen corresponding path program 1 times [2024-11-08 17:42:50,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:42:50,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419669490] [2024-11-08 17:42:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:50,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:50,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:50,017 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:50,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:42:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:50,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:42:50,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:42:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 17:42:50,332 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:42:50,332 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:42:50,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419669490] [2024-11-08 17:42:50,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419669490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:42:50,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:42:50,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:42:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49228678] [2024-11-08 17:42:50,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:42:50,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:42:50,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:42:50,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:42:50,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:42:50,336 INFO L87 Difference]: Start difference. First operand 98 states and 129 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-08 17:42:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:42:50,412 INFO L93 Difference]: Finished difference Result 181 states and 243 transitions. [2024-11-08 17:42:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:42:50,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 90 [2024-11-08 17:42:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:42:50,415 INFO L225 Difference]: With dead ends: 181 [2024-11-08 17:42:50,415 INFO L226 Difference]: Without dead ends: 102 [2024-11-08 17:42:50,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:42:50,417 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 2 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:42:50,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 234 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:42:50,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-08 17:42:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2024-11-08 17:42:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 67 states have internal predecessors, (81), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-08 17:42:50,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2024-11-08 17:42:50,437 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 90 [2024-11-08 17:42:50,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:42:50,438 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2024-11-08 17:42:50,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-08 17:42:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2024-11-08 17:42:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-08 17:42:50,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:42:50,445 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:50,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:42:50,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:50,647 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:42:50,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1102694125, now seen corresponding path program 1 times [2024-11-08 17:42:50,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:42:50,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874912719] [2024-11-08 17:42:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:50,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:50,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:50,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:50,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:42:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:50,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:42:50,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:42:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 17:42:51,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:42:51,031 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:42:51,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874912719] [2024-11-08 17:42:51,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874912719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:42:51,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:42:51,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:42:51,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675294480] [2024-11-08 17:42:51,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:42:51,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:42:51,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:42:51,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:42:51,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:42:51,037 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-08 17:42:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:42:51,170 INFO L93 Difference]: Finished difference Result 182 states and 240 transitions. [2024-11-08 17:42:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:42:51,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 98 [2024-11-08 17:42:51,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:42:51,173 INFO L225 Difference]: With dead ends: 182 [2024-11-08 17:42:51,173 INFO L226 Difference]: Without dead ends: 102 [2024-11-08 17:42:51,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:42:51,179 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:42:51,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 684 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:42:51,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-08 17:42:51,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2024-11-08 17:42:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 68 states have internal predecessors, (82), 24 states have call successors, (24), 8 states have call predecessors, (24), 9 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2024-11-08 17:42:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2024-11-08 17:42:51,196 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 98 [2024-11-08 17:42:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:42:51,197 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2024-11-08 17:42:51,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-08 17:42:51,197 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2024-11-08 17:42:51,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 17:42:51,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:42:51,199 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:51,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:42:51,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:51,404 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:42:51,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:51,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2057806673, now seen corresponding path program 1 times [2024-11-08 17:42:51,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:42:51,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221932376] [2024-11-08 17:42:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:51,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:51,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:51,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:51,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:42:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:51,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 17:42:51,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:42:51,732 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:42:56,579 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|)))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$#1.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) (_ bv0 64))))) is different from true [2024-11-08 17:42:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 17:42:56,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:42:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 17:42:57,623 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:42:57,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221932376] [2024-11-08 17:42:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221932376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:42:57,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:42:57,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2024-11-08 17:42:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311969906] [2024-11-08 17:42:57,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:42:57,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 17:42:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:42:57,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 17:42:57,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=199, Unknown=1, NotChecked=28, Total=272 [2024-11-08 17:42:57,628 INFO L87 Difference]: Start difference. First operand 100 states and 131 transitions. Second operand has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 17 states have internal predecessors, (96), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-08 17:42:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:42:59,465 INFO L93 Difference]: Finished difference Result 229 states and 314 transitions. [2024-11-08 17:42:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 17:42:59,467 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 17 states have internal predecessors, (96), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 100 [2024-11-08 17:42:59,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:42:59,470 INFO L225 Difference]: With dead ends: 229 [2024-11-08 17:42:59,470 INFO L226 Difference]: Without dead ends: 148 [2024-11-08 17:42:59,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=76, Invalid=347, Unknown=1, NotChecked=38, Total=462 [2024-11-08 17:42:59,474 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 71 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:42:59,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1031 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 380 Invalid, 0 Unknown, 314 Unchecked, 1.4s Time] [2024-11-08 17:42:59,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-08 17:42:59,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 119. [2024-11-08 17:42:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 83 states have (on average 1.2530120481927711) internal successors, (104), 85 states have internal predecessors, (104), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-08 17:42:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2024-11-08 17:42:59,513 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 100 [2024-11-08 17:42:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:42:59,514 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2024-11-08 17:42:59,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.647058823529412) internal successors, (96), 17 states have internal predecessors, (96), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-08 17:42:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2024-11-08 17:42:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 17:42:59,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:42:59,517 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:42:59,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:42:59,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:59,718 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:42:59,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:42:59,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1378534419, now seen corresponding path program 1 times [2024-11-08 17:42:59,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:42:59,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172200163] [2024-11-08 17:42:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:42:59,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:42:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:42:59,721 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:42:59,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:42:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:42:59,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:42:59,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:43:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 17:43:00,025 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:43:00,026 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:43:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172200163] [2024-11-08 17:43:00,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172200163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:43:00,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:43:00,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:43:00,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438415697] [2024-11-08 17:43:00,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:43:00,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:43:00,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:43:00,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:43:00,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:43:00,029 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 17:43:00,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:43:00,077 INFO L93 Difference]: Finished difference Result 220 states and 293 transitions. [2024-11-08 17:43:00,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:43:00,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-11-08 17:43:00,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:43:00,080 INFO L225 Difference]: With dead ends: 220 [2024-11-08 17:43:00,080 INFO L226 Difference]: Without dead ends: 120 [2024-11-08 17:43:00,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:43:00,082 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:43:00,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 357 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:43:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-08 17:43:00,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2024-11-08 17:43:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 85 states have internal predecessors, (103), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-08 17:43:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 155 transitions. [2024-11-08 17:43:00,101 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 155 transitions. Word has length 100 [2024-11-08 17:43:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:43:00,101 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 155 transitions. [2024-11-08 17:43:00,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 17:43:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 155 transitions. [2024-11-08 17:43:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 17:43:00,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:43:00,104 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:43:00,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:43:00,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:43:00,305 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:43:00,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:43:00,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1176710485, now seen corresponding path program 1 times [2024-11-08 17:43:00,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:43:00,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617931430] [2024-11-08 17:43:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:43:00,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:43:00,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:43:00,312 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:43:00,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:43:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:43:00,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:43:00,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:43:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 17:43:00,611 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:43:00,612 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:43:00,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617931430] [2024-11-08 17:43:00,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617931430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:43:00,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:43:00,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:43:00,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866699518] [2024-11-08 17:43:00,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:43:00,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:43:00,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:43:00,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:43:00,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:43:00,616 INFO L87 Difference]: Start difference. First operand 119 states and 155 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 17:43:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:43:00,668 INFO L93 Difference]: Finished difference Result 218 states and 291 transitions. [2024-11-08 17:43:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:43:00,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-11-08 17:43:00,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:43:00,675 INFO L225 Difference]: With dead ends: 218 [2024-11-08 17:43:00,675 INFO L226 Difference]: Without dead ends: 118 [2024-11-08 17:43:00,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:43:00,677 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:43:00,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 358 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:43:00,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-08 17:43:00,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2024-11-08 17:43:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 81 states have internal predecessors, (97), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2024-11-08 17:43:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 149 transitions. [2024-11-08 17:43:00,701 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 149 transitions. Word has length 100 [2024-11-08 17:43:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:43:00,702 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 149 transitions. [2024-11-08 17:43:00,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-08 17:43:00,702 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 149 transitions. [2024-11-08 17:43:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:43:00,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:43:00,704 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:43:00,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:43:00,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:43:00,908 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:43:00,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:43:00,909 INFO L85 PathProgramCache]: Analyzing trace with hash 182520160, now seen corresponding path program 1 times [2024-11-08 17:43:00,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:43:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562569319] [2024-11-08 17:43:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:43:00,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:43:00,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:43:00,911 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:43:00,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:43:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:43:01,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 17:43:01,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:43:01,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 8 treesize of output 1 [2024-11-08 17:43:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 17:43:03,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:43:06,785 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-08 17:43:06,786 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2024-11-08 17:43:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-08 17:43:07,083 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:43:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562569319] [2024-11-08 17:43:07,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562569319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:43:07,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:43:07,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 21 [2024-11-08 17:43:07,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410213045] [2024-11-08 17:43:07,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:43:07,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:43:07,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:43:07,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:43:07,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:43:07,087 INFO L87 Difference]: Start difference. First operand 115 states and 149 transitions. Second operand has 21 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-08 17:43:11,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:43:16,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:43:20,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:43:24,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:43:28,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:43:32,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:43:32,655 INFO L93 Difference]: Finished difference Result 279 states and 354 transitions. [2024-11-08 17:43:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 17:43:32,656 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 102 [2024-11-08 17:43:32,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:43:32,658 INFO L225 Difference]: With dead ends: 279 [2024-11-08 17:43:32,658 INFO L226 Difference]: Without dead ends: 186 [2024-11-08 17:43:32,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 178 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 17:43:32,660 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 154 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 63 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:43:32,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1091 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 629 Invalid, 5 Unknown, 0 Unchecked, 24.1s Time] [2024-11-08 17:43:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-08 17:43:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2024-11-08 17:43:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 133 states have (on average 1.218045112781955) internal successors, (162), 135 states have internal predecessors, (162), 28 states have call successors, (28), 15 states have call predecessors, (28), 16 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2024-11-08 17:43:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 221 transitions. [2024-11-08 17:43:32,692 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 221 transitions. Word has length 102 [2024-11-08 17:43:32,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:43:32,693 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 221 transitions. [2024-11-08 17:43:32,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 9 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-08 17:43:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 221 transitions. [2024-11-08 17:43:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:43:32,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:43:32,696 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:43:32,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 17:43:32,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:43:32,897 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:43:32,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:43:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash -626826466, now seen corresponding path program 1 times [2024-11-08 17:43:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:43:32,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188338980] [2024-11-08 17:43:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:43:32,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:43:32,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:43:32,901 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:43:32,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:43:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:43:33,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 17:43:33,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:43:33,507 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:43:33,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:43:33,540 INFO L378 Elim1Store]: Elim1 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 1 [2024-11-08 17:43:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 17:43:36,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:43:36,689 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:43:36,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188338980] [2024-11-08 17:43:36,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188338980] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:43:36,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:43:36,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-08 17:43:36,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064153311] [2024-11-08 17:43:36,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:43:36,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:43:36,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:43:36,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:43:36,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:43:36,691 INFO L87 Difference]: Start difference. First operand 178 states and 221 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:43:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:43:40,428 INFO L93 Difference]: Finished difference Result 433 states and 542 transitions. [2024-11-08 17:43:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:43:40,430 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 102 [2024-11-08 17:43:40,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:43:40,433 INFO L225 Difference]: With dead ends: 433 [2024-11-08 17:43:40,434 INFO L226 Difference]: Without dead ends: 347 [2024-11-08 17:43:40,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:43:40,436 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 64 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:43:40,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 623 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-08 17:43:40,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-08 17:43:40,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2024-11-08 17:43:40,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 259 states have (on average 1.2162162162162162) internal successors, (315), 263 states have internal predecessors, (315), 54 states have call successors, (54), 29 states have call predecessors, (54), 31 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2024-11-08 17:43:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 429 transitions. [2024-11-08 17:43:40,498 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 429 transitions. Word has length 102 [2024-11-08 17:43:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:43:40,498 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 429 transitions. [2024-11-08 17:43:40,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:43:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 429 transitions. [2024-11-08 17:43:40,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:43:40,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:43:40,501 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:43:40,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 17:43:40,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:43:40,702 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:43:40,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:43:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1019853476, now seen corresponding path program 1 times [2024-11-08 17:43:40,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:43:40,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640915705] [2024-11-08 17:43:40,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:43:40,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:43:40,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:43:40,706 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:43:40,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:43:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:43:40,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 17:43:40,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:43:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 47 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 17:43:44,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:43:48,486 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-08 17:43:48,486 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2024-11-08 17:43:48,518 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-08 17:43:48,519 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2024-11-08 17:43:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-08 17:43:48,625 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:43:48,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640915705] [2024-11-08 17:43:48,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640915705] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:43:48,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:43:48,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 23 [2024-11-08 17:43:48,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792947678] [2024-11-08 17:43:48,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:43:48,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 17:43:48,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:43:48,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 17:43:48,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-08 17:43:48,629 INFO L87 Difference]: Start difference. First operand 345 states and 429 transitions. Second operand has 23 states, 22 states have (on average 4.136363636363637) internal successors, (91), 22 states have internal predecessors, (91), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-08 17:43:52,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:43:56,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:44:00,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:44:05,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:44:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:10,962 INFO L93 Difference]: Finished difference Result 528 states and 660 transitions. [2024-11-08 17:44:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:44:10,963 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.136363636363637) internal successors, (91), 22 states have internal predecessors, (91), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 102 [2024-11-08 17:44:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:10,966 INFO L225 Difference]: With dead ends: 528 [2024-11-08 17:44:10,967 INFO L226 Difference]: Without dead ends: 360 [2024-11-08 17:44:10,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 175 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=252, Invalid=1230, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 17:44:10,972 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 218 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 82 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:10,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1276 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 791 Invalid, 4 Unknown, 0 Unchecked, 20.4s Time] [2024-11-08 17:44:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-08 17:44:11,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 345. [2024-11-08 17:44:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 259 states have (on average 1.2084942084942085) internal successors, (313), 263 states have internal predecessors, (313), 54 states have call successors, (54), 29 states have call predecessors, (54), 31 states have return successors, (60), 52 states have call predecessors, (60), 52 states have call successors, (60) [2024-11-08 17:44:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 427 transitions. [2024-11-08 17:44:11,073 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 427 transitions. Word has length 102 [2024-11-08 17:44:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:11,073 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 427 transitions. [2024-11-08 17:44:11,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.136363636363637) internal successors, (91), 22 states have internal predecessors, (91), 8 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-08 17:44:11,074 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 427 transitions. [2024-11-08 17:44:11,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:44:11,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:11,076 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:44:11,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 17:44:11,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:11,280 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:11,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash -761688038, now seen corresponding path program 1 times [2024-11-08 17:44:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:44:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800784181] [2024-11-08 17:44:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:11,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:11,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:44:11,284 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:44:11,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:44:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:11,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:44:11,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:44:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 43 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 17:44:16,165 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:44:17,150 INFO L378 Elim1Store]: Elim1 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 [2024-11-08 17:44:18,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:44:18,901 INFO L378 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 17 treesize of output 20 [2024-11-08 17:44:19,837 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-08 17:44:19,838 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:44:19,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800784181] [2024-11-08 17:44:19,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800784181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:44:19,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:44:19,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 26 [2024-11-08 17:44:19,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436873852] [2024-11-08 17:44:19,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:44:19,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:44:19,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:44:19,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:44:19,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:44:19,841 INFO L87 Difference]: Start difference. First operand 345 states and 427 transitions. Second operand has 26 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 9 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-08 17:44:23,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:44:28,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:44:37,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:37,631 INFO L93 Difference]: Finished difference Result 954 states and 1210 transitions. [2024-11-08 17:44:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 17:44:37,632 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 9 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 102 [2024-11-08 17:44:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:37,637 INFO L225 Difference]: With dead ends: 954 [2024-11-08 17:44:37,637 INFO L226 Difference]: Without dead ends: 720 [2024-11-08 17:44:37,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 173 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=405, Invalid=2247, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 17:44:37,641 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 442 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 127 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:37,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1718 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1250 Invalid, 2 Unknown, 0 Unchecked, 14.6s Time] [2024-11-08 17:44:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-08 17:44:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 608. [2024-11-08 17:44:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 457 states have (on average 1.2188183807439825) internal successors, (557), 466 states have internal predecessors, (557), 96 states have call successors, (96), 45 states have call predecessors, (96), 54 states have return successors, (115), 96 states have call predecessors, (115), 92 states have call successors, (115) [2024-11-08 17:44:37,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 768 transitions. [2024-11-08 17:44:37,810 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 768 transitions. Word has length 102 [2024-11-08 17:44:37,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:37,810 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 768 transitions. [2024-11-08 17:44:37,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 9 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-08 17:44:37,811 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 768 transitions. [2024-11-08 17:44:37,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-08 17:44:37,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:37,812 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:44:37,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 17:44:38,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:38,021 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:38,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:38,022 INFO L85 PathProgramCache]: Analyzing trace with hash 293286169, now seen corresponding path program 1 times [2024-11-08 17:44:38,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:44:38,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306837992] [2024-11-08 17:44:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:38,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:38,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:44:38,025 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:44:38,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:44:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:38,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 17:44:38,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:44:38,582 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:44:38,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:44:38,607 INFO L378 Elim1Store]: Elim1 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 1 [2024-11-08 17:44:38,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2024-11-08 17:44:38,653 INFO L378 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 56 treesize of output 21 [2024-11-08 17:44:38,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-08 17:44:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-08 17:44:40,732 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:44:40,733 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:44:40,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306837992] [2024-11-08 17:44:40,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306837992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:40,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:40,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-08 17:44:40,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398764198] [2024-11-08 17:44:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:40,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:44:40,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:44:40,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:44:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:44:40,736 INFO L87 Difference]: Start difference. First operand 608 states and 768 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:44:44,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:44:49,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:44:53,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:53,405 INFO L93 Difference]: Finished difference Result 793 states and 1002 transitions. [2024-11-08 17:44:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:44:53,406 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 104 [2024-11-08 17:44:53,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:53,411 INFO L225 Difference]: With dead ends: 793 [2024-11-08 17:44:53,411 INFO L226 Difference]: Without dead ends: 613 [2024-11-08 17:44:53,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:44:53,413 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 64 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:53,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1161 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 512 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2024-11-08 17:44:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-08 17:44:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 312. [2024-11-08 17:44:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 234 states have (on average 1.205128205128205) internal successors, (282), 238 states have internal predecessors, (282), 49 states have call successors, (49), 24 states have call predecessors, (49), 28 states have return successors, (58), 49 states have call predecessors, (58), 47 states have call successors, (58) [2024-11-08 17:44:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 389 transitions. [2024-11-08 17:44:53,511 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 389 transitions. Word has length 104 [2024-11-08 17:44:53,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:53,513 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 389 transitions. [2024-11-08 17:44:53,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-08 17:44:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 389 transitions. [2024-11-08 17:44:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:44:53,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:53,517 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:44:53,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 17:44:53,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:53,718 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:53,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 26848504, now seen corresponding path program 1 times [2024-11-08 17:44:53,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:44:53,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723088342] [2024-11-08 17:44:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:53,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:53,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:44:53,720 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:44:53,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:44:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:53,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-08 17:44:53,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:44:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-08 17:44:54,671 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:44:54,671 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:44:54,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723088342] [2024-11-08 17:44:54,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723088342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:54,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:54,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:44:54,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980919515] [2024-11-08 17:44:54,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:54,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:44:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:44:54,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:44:54,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:44:54,673 INFO L87 Difference]: Start difference. First operand 312 states and 389 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-08 17:44:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:56,331 INFO L93 Difference]: Finished difference Result 593 states and 781 transitions. [2024-11-08 17:44:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:44:56,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2024-11-08 17:44:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:56,336 INFO L225 Difference]: With dead ends: 593 [2024-11-08 17:44:56,336 INFO L226 Difference]: Without dead ends: 390 [2024-11-08 17:44:56,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:44:56,338 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 16 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:56,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 725 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 17:44:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-08 17:44:56,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 333. [2024-11-08 17:44:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 252 states have (on average 1.2103174603174602) internal successors, (305), 256 states have internal predecessors, (305), 49 states have call successors, (49), 24 states have call predecessors, (49), 31 states have return successors, (66), 52 states have call predecessors, (66), 47 states have call successors, (66) [2024-11-08 17:44:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 420 transitions. [2024-11-08 17:44:56,431 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 420 transitions. Word has length 112 [2024-11-08 17:44:56,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:56,431 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 420 transitions. [2024-11-08 17:44:56,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-08 17:44:56,432 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 420 transitions. [2024-11-08 17:44:56,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:44:56,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:56,433 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:44:56,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 17:44:56,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:56,634 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:56,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1966010550, now seen corresponding path program 1 times [2024-11-08 17:44:56,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:44:56,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052157650] [2024-11-08 17:44:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:56,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:56,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:44:56,637 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:44:56,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:44:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:56,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:44:56,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:44:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-08 17:44:56,934 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:44:56,934 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:44:56,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052157650] [2024-11-08 17:44:56,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052157650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:56,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:56,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:44:56,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293707541] [2024-11-08 17:44:56,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:56,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:44:56,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:44:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:44:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:44:56,937 INFO L87 Difference]: Start difference. First operand 333 states and 420 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-08 17:44:57,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:57,067 INFO L93 Difference]: Finished difference Result 629 states and 818 transitions. [2024-11-08 17:44:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:44:57,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2024-11-08 17:44:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:57,072 INFO L225 Difference]: With dead ends: 629 [2024-11-08 17:44:57,072 INFO L226 Difference]: Without dead ends: 345 [2024-11-08 17:44:57,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:44:57,075 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:57,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:44:57,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-08 17:44:57,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 342. [2024-11-08 17:44:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 259 states have (on average 1.193050193050193) internal successors, (309), 262 states have internal predecessors, (309), 49 states have call successors, (49), 24 states have call predecessors, (49), 33 states have return successors, (76), 55 states have call predecessors, (76), 47 states have call successors, (76) [2024-11-08 17:44:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 434 transitions. [2024-11-08 17:44:57,173 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 434 transitions. Word has length 112 [2024-11-08 17:44:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:57,173 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 434 transitions. [2024-11-08 17:44:57,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-08 17:44:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 434 transitions. [2024-11-08 17:44:57,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:44:57,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:57,175 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:44:57,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 17:44:57,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:57,376 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:57,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:57,377 INFO L85 PathProgramCache]: Analyzing trace with hash -454231754, now seen corresponding path program 1 times [2024-11-08 17:44:57,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:44:57,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287566808] [2024-11-08 17:44:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:44:57,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:57,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:44:57,379 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:44:57,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 17:44:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:44:57,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:44:57,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:44:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 17:44:57,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:44:57,680 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:44:57,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287566808] [2024-11-08 17:44:57,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287566808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:44:57,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:44:57,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:44:57,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507750701] [2024-11-08 17:44:57,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:44:57,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:44:57,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:44:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:44:57,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:44:57,683 INFO L87 Difference]: Start difference. First operand 342 states and 434 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-08 17:44:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:44:57,839 INFO L93 Difference]: Finished difference Result 614 states and 795 transitions. [2024-11-08 17:44:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:44:57,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2024-11-08 17:44:57,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:44:57,843 INFO L225 Difference]: With dead ends: 614 [2024-11-08 17:44:57,844 INFO L226 Difference]: Without dead ends: 323 [2024-11-08 17:44:57,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:44:57,846 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:44:57,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 357 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:44:57,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-08 17:44:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2024-11-08 17:44:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 243 states have (on average 1.1604938271604939) internal successors, (282), 247 states have internal predecessors, (282), 49 states have call successors, (49), 24 states have call predecessors, (49), 30 states have return successors, (64), 51 states have call predecessors, (64), 47 states have call successors, (64) [2024-11-08 17:44:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 395 transitions. [2024-11-08 17:44:57,932 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 395 transitions. Word has length 112 [2024-11-08 17:44:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:44:57,933 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 395 transitions. [2024-11-08 17:44:57,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-08 17:44:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 395 transitions. [2024-11-08 17:44:57,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-08 17:44:57,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:44:57,934 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:44:57,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 17:44:58,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:58,139 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:44:58,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:44:58,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2011811351, now seen corresponding path program 2 times [2024-11-08 17:44:58,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:44:58,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271403685] [2024-11-08 17:44:58,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:44:58,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:44:58,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:44:58,142 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:44:58,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 17:44:58,442 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:44:58,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:44:58,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:44:58,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:44:58,531 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-08 17:45:03,023 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_8| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_8|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_8|)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_8| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_8|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_8|))))) is different from true [2024-11-08 17:45:07,315 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_9| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_9| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_9|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_9|)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_9| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_9| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_9|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_9|))))) is different from true [2024-11-08 17:45:11,740 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_42 (_ BitVec 64)) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_41 (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_front_~list.base_BEFORE_CALL_42) v_aws_linked_list_front_~list.offset_BEFORE_CALL_41)))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_42 (_ BitVec 64)) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_41 (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_42) v_aws_linked_list_front_~list.offset_BEFORE_CALL_41))))) is different from true [2024-11-08 17:45:15,955 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_43 (_ BitVec 64)) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_42 (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_43) v_aws_linked_list_front_~list.offset_BEFORE_CALL_42)))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_43 (_ BitVec 64)) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_42 (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_front_~list.base_BEFORE_CALL_43) v_aws_linked_list_front_~list.offset_BEFORE_CALL_42))))) is different from true [2024-11-08 17:45:20,266 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_44 (_ BitVec 64)) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_43 (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_44) v_aws_linked_list_front_~list.offset_BEFORE_CALL_43)))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_44 (_ BitVec 64)) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_43 (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_front_~list.base_BEFORE_CALL_44) v_aws_linked_list_front_~list.offset_BEFORE_CALL_43))))) is different from true [2024-11-08 17:45:24,505 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_45 (_ BitVec 64)) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_44 (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$#1.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_45) v_aws_linked_list_front_~list.offset_BEFORE_CALL_44) (_ bv0 64)))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_45 (_ BitVec 64)) (v_aws_linked_list_front_~list.offset_BEFORE_CALL_44 (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_front_~list.base_BEFORE_CALL_45) v_aws_linked_list_front_~list.offset_BEFORE_CALL_44))))) is different from true [2024-11-08 17:45:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 19 not checked. [2024-11-08 17:45:33,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:45:40,169 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-08 17:45:40,170 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2024-11-08 17:45:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 17:45:40,440 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:45:40,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271403685] [2024-11-08 17:45:40,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271403685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:45:40,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:45:40,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 25 [2024-11-08 17:45:40,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270066429] [2024-11-08 17:45:40,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:45:40,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:45:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:45:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:45:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=286, Unknown=9, NotChecked=234, Total=600 [2024-11-08 17:45:40,444 INFO L87 Difference]: Start difference. First operand 323 states and 395 transitions. Second operand has 25 states, 25 states have (on average 3.96) internal successors, (99), 24 states have internal predecessors, (99), 6 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-08 17:45:45,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:45:49,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:45:54,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:46:08,615 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_9| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_9| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_9|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_9|)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_9| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_9| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_9|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_9|))))) (or (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_8| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.base| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_8|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_8|)))) (exists ((|v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_8| (_ BitVec 64)) (|v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_8| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$#1.offset| |v_aws_linked_list_is_valid_#in~list#1.base_BEFORE_CALL_8|) |v_aws_linked_list_is_valid_#in~list#1.offset_BEFORE_CALL_8|)))))) is different from true [2024-11-08 17:46:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:15,644 INFO L93 Difference]: Finished difference Result 518 states and 623 transitions. [2024-11-08 17:46:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 17:46:15,646 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 24 states have internal predecessors, (99), 6 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 114 [2024-11-08 17:46:15,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:15,650 INFO L225 Difference]: With dead ends: 518 [2024-11-08 17:46:15,650 INFO L226 Difference]: Without dead ends: 387 [2024-11-08 17:46:15,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 198 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 59.4s TimeCoverageRelationStatistics Valid=167, Invalid=604, Unknown=13, NotChecked=406, Total=1190 [2024-11-08 17:46:15,652 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 70 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 1443 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:15,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 938 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 386 Invalid, 3 Unknown, 1443 Unchecked, 14.4s Time] [2024-11-08 17:46:15,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-08 17:46:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 355. [2024-11-08 17:46:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 269 states have (on average 1.1598513011152416) internal successors, (312), 273 states have internal predecessors, (312), 49 states have call successors, (49), 30 states have call predecessors, (49), 36 states have return successors, (64), 51 states have call predecessors, (64), 47 states have call successors, (64) [2024-11-08 17:46:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 425 transitions. [2024-11-08 17:46:15,754 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 425 transitions. Word has length 114 [2024-11-08 17:46:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:15,755 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 425 transitions. [2024-11-08 17:46:15,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.96) internal successors, (99), 24 states have internal predecessors, (99), 6 states have call successors, (22), 8 states have call predecessors, (22), 9 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-08 17:46:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 425 transitions. [2024-11-08 17:46:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-08 17:46:15,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:15,757 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:15,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 17:46:15,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:46:15,962 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:15,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:15,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1272038695, now seen corresponding path program 1 times [2024-11-08 17:46:15,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:46:15,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988955599] [2024-11-08 17:46:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:15,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:46:15,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:46:15,967 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:46:15,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 17:46:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:16,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:46:16,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:46:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-08 17:46:16,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:46:16,609 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:46:16,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988955599] [2024-11-08 17:46:16,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988955599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:46:16,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:46:16,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:46:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146305619] [2024-11-08 17:46:16,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:46:16,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:46:16,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:46:16,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:46:16,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:46:16,612 INFO L87 Difference]: Start difference. First operand 355 states and 425 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-08 17:46:16,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:46:16,964 INFO L93 Difference]: Finished difference Result 739 states and 901 transitions. [2024-11-08 17:46:16,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:46:16,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 114 [2024-11-08 17:46:16,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:46:16,969 INFO L225 Difference]: With dead ends: 739 [2024-11-08 17:46:16,969 INFO L226 Difference]: Without dead ends: 346 [2024-11-08 17:46:16,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:46:16,972 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 44 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:46:16,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 596 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:46:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-08 17:46:17,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2024-11-08 17:46:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 261 states have (on average 1.1455938697318007) internal successors, (299), 264 states have internal predecessors, (299), 49 states have call successors, (49), 30 states have call predecessors, (49), 35 states have return successors, (63), 51 states have call predecessors, (63), 47 states have call successors, (63) [2024-11-08 17:46:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 411 transitions. [2024-11-08 17:46:17,078 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 411 transitions. Word has length 114 [2024-11-08 17:46:17,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:46:17,078 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 411 transitions. [2024-11-08 17:46:17,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-08 17:46:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 411 transitions. [2024-11-08 17:46:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-08 17:46:17,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:46:17,081 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:46:17,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 17:46:17,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:46:17,285 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:46:17,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:46:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1441155787, now seen corresponding path program 1 times [2024-11-08 17:46:17,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:46:17,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247000385] [2024-11-08 17:46:17,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:46:17,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:46:17,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:46:17,287 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:46:17,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 17:46:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:46:17,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 17:46:17,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:46:17,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 8 treesize of output 1 [2024-11-08 17:46:17,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 8 treesize of output 1 [2024-11-08 17:46:22,703 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_56 (_ BitVec 64))) (not (= (_ bv16 64) (select (select |c_#memory_$Pointer$#1.offset| v_aws_linked_list_front_~list.base_BEFORE_CALL_56) (_ bv0 64))))) (exists ((v_aws_linked_list_front_~list.base_BEFORE_CALL_56 (_ BitVec 64))) (not (= (select (select |c_#memory_$Pointer$#1.base| v_aws_linked_list_front_~list.base_BEFORE_CALL_56) (_ bv0 64)) v_aws_linked_list_front_~list.base_BEFORE_CALL_56)))) is different from true [2024-11-08 17:46:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 17:46:25,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:46:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-08 17:46:34,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:46:34,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247000385] [2024-11-08 17:46:34,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247000385] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:46:34,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:46:34,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2024-11-08 17:46:34,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192383007] [2024-11-08 17:46:34,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:46:34,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 17:46:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:46:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 17:46:34,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=780, Unknown=2, NotChecked=56, Total=930 [2024-11-08 17:46:34,245 INFO L87 Difference]: Start difference. First operand 346 states and 411 transitions. Second operand has 31 states, 27 states have (on average 5.111111111111111) internal successors, (138), 27 states have internal predecessors, (138), 14 states have call successors, (29), 5 states have call predecessors, (29), 9 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-08 17:46:45,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:46:50,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:46:54,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:46:58,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:47:02,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-08 17:47:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:47:05,426 INFO L93 Difference]: Finished difference Result 353 states and 418 transitions. [2024-11-08 17:47:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 17:47:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.111111111111111) internal successors, (138), 27 states have internal predecessors, (138), 14 states have call successors, (29), 5 states have call predecessors, (29), 9 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) Word has length 116 [2024-11-08 17:47:05,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:47:05,430 INFO L225 Difference]: With dead ends: 353 [2024-11-08 17:47:05,430 INFO L226 Difference]: Without dead ends: 205 [2024-11-08 17:47:05,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=140, Invalid=1194, Unknown=2, NotChecked=70, Total=1406 [2024-11-08 17:47:05,432 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 63 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 50 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 394 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:47:05,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 1067 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1172 Invalid, 5 Unknown, 394 Unchecked, 28.9s Time] [2024-11-08 17:47:05,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-08 17:47:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 200. [2024-11-08 17:47:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 151 states have (on average 1.119205298013245) internal successors, (169), 152 states have internal predecessors, (169), 28 states have call successors, (28), 19 states have call predecessors, (28), 20 states have return successors, (32), 28 states have call predecessors, (32), 27 states have call successors, (32) [2024-11-08 17:47:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 229 transitions. [2024-11-08 17:47:05,504 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 229 transitions. Word has length 116 [2024-11-08 17:47:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:47:05,504 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 229 transitions. [2024-11-08 17:47:05,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.111111111111111) internal successors, (138), 27 states have internal predecessors, (138), 14 states have call successors, (29), 5 states have call predecessors, (29), 9 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-08 17:47:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 229 transitions. [2024-11-08 17:47:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-08 17:47:05,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:47:05,506 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:47:05,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 17:47:05,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:05,707 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:47:05,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:47:05,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1755321946, now seen corresponding path program 2 times [2024-11-08 17:47:05,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:47:05,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034699830] [2024-11-08 17:47:05,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:47:05,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:47:05,709 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:47:05,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 17:47:06,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:47:06,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:47:06,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 17:47:06,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:47:06,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-08 17:47:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 95 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 17:47:10,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:47:11,714 INFO L378 Elim1Store]: Elim1 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 39 treesize of output 27 [2024-11-08 17:47:11,876 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:47:11,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034699830] [2024-11-08 17:47:11,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034699830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:47:11,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [577909646] [2024-11-08 17:47:11,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:47:11,877 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:47:11,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:47:11,879 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:47:11,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-08 17:47:12,808 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:47:12,808 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:47:12,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 17:47:12,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:47:12,931 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-08 17:47:13,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:47:13,196 INFO L378 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 29 treesize of output 35 [2024-11-08 17:47:13,239 INFO L378 Elim1Store]: Elim1 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-08 17:47:21,898 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 17:47:21,898 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2024-11-08 17:47:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 89 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 17:47:21,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:47:26,407 INFO L349 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2024-11-08 17:47:26,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 630 treesize of output 617 [2024-11-08 17:47:26,708 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:47:26,708 INFO L378 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 317 treesize of output 333 [2024-11-08 17:47:26,729 INFO L378 Elim1Store]: Elim1 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 286 treesize of output 284 [2024-11-08 17:47:26,798 INFO L378 Elim1Store]: Elim1 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 6 treesize of output 4 [2024-11-08 17:47:27,177 INFO L378 Elim1Store]: Elim1 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 6 treesize of output 4 [2024-11-08 17:47:27,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:47:27,576 INFO L378 Elim1Store]: Elim1 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 27 treesize of output 31 [2024-11-08 17:47:28,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:47:28,272 INFO L378 Elim1Store]: Elim1 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 472 treesize of output 470 [2024-11-08 17:47:30,262 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse21 (bvadd (_ bv24 64) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset|))) (let ((.cse11 (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| (bvadd (_ bv16 64) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset|))) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|)) (.cse12 (= .cse21 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) (let ((.cse1 (= |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|)) (.cse17 (not .cse12)) (.cse3 (store .cse11 .cse21 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|)) (.cse4 (bvadd (_ bv16 64) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) (let ((.cse5 (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|)) (.cse15 (or .cse17 (forall ((v_prenex_3 (_ BitVec 64)) (v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (let ((.cse20 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_prenex_2) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse3))) (select (select .cse20 v_prenex_3) (select (select .cse20 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) .cse4))))) (.cse8 (forall ((v_arrayElimCell_24 (_ BitVec 64)) (v_ArrVal_566 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (let ((.cse19 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_566) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse3))) (select (select .cse19 v_arrayElimCell_24) (select (select .cse19 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) .cse4)))) (.cse7 (not .cse1))) (let ((.cse6 (= |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|)) (.cse0 (or .cse8 .cse7)) (.cse10 (or .cse17 (forall ((v_ArrVal_569 (_ BitVec 64)) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (let ((.cse18 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_prenex_4) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse3))) (select (select .cse18 v_ArrVal_569) (select (select .cse18 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) .cse4))))) (.cse13 (and (or (forall ((v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_arrayElimCell_20 (_ BitVec 64))) (not (= (let ((.cse16 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_prenex_2) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse3))) (select (select .cse16 v_arrayElimCell_20) (select (select .cse16 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) .cse4))) .cse12) .cse15)) (.cse9 (not .cse5))) (and (or (and .cse0 (or .cse1 (forall ((v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_arrayElimCell_20 (_ BitVec 64))) (not (= (let ((.cse2 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_prenex_1) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse3))) (select (select .cse2 v_arrayElimCell_20) (select (select .cse2 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) .cse4))))) .cse5) (or (not .cse6) .cse7 (and (or .cse8 .cse5) (or .cse9 (and .cse10 (or (forall ((v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select .cse11 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_prenex_4) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse3) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|)) .cse4))) .cse12))))) (or .cse9 (and (or .cse1 .cse13) (or .cse7 (and .cse10 (or (forall ((v_arrayElimCell_20 (_ BitVec 64)) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (let ((.cse14 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_prenex_4) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse3))) (select (select .cse14 v_arrayElimCell_20) (select (select .cse14 |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|))) .cse4))) .cse12)))) .cse6) (or (and .cse0 (or .cse1 (forall ((v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select .cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_prenex_1) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse3) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|)) .cse4))))) .cse5) (or (and (or .cse7 (and .cse10 (or .cse12 (forall ((v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select .cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_prenex_4) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse3) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|)) .cse4)))))) (or .cse1 (and (or .cse12 (forall ((v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64)))) (not (= (select .cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_prenex_2) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| .cse3) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.base|) |c_ULTIMATE.start_aws_linked_list_front_harness_~#list~0#1.offset|)) .cse4)))) .cse15))) .cse9) (or .cse13 (= |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) .cse9))))))) is different from false [2024-11-08 17:47:31,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:47:31,158 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:47:31,159 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:47:31,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:47:31,183 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:47:31,189 INFO L378 Elim1Store]: Elim1 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 30 [2024-11-08 17:47:31,205 INFO L378 Elim1Store]: Elim1 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 5782 treesize of output 5718 [2024-11-08 17:47:31,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:47:31,294 INFO L378 Elim1Store]: Elim1 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 104 treesize of output 96 [2024-11-08 17:47:31,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:47:31,604 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:47:31,609 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:47:31,611 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:47:31,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:47:31,625 INFO L378 Elim1Store]: Elim1 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 24 treesize of output 20 [2024-11-08 17:47:31,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:47:31,670 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:47:31,680 INFO L378 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 220 [2024-11-08 17:47:31,763 INFO L378 Elim1Store]: Elim1 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 590 treesize of output 586 [2024-11-08 17:47:31,955 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:47:31,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 5926 treesize of output 4850 [2024-11-08 17:47:32,281 INFO L378 Elim1Store]: Elim1 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 590 treesize of output 586 [2024-11-08 17:47:32,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:47:32,395 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:47:32,397 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:47:32,559 INFO L349 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2024-11-08 17:47:32,560 INFO L378 Elim1Store]: Elim1 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 2309 treesize of output 2182 [2024-11-08 17:47:34,014 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-08 17:47:34,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [577909646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:47:34,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:47:34,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 13] total 40 [2024-11-08 17:47:34,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061732981] [2024-11-08 17:47:34,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:47:34,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 17:47:34,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:47:34,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 17:47:34,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1406, Unknown=1, NotChecked=76, Total=1640 [2024-11-08 17:47:34,018 INFO L87 Difference]: Start difference. First operand 200 states and 229 transitions. Second operand has 40 states, 37 states have (on average 5.081081081081081) internal successors, (188), 36 states have internal predecessors, (188), 18 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (33), 15 states have call predecessors, (33), 18 states have call successors, (33) [2024-11-08 17:47:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:47:57,581 INFO L93 Difference]: Finished difference Result 572 states and 677 transitions. [2024-11-08 17:47:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 17:47:57,583 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 5.081081081081081) internal successors, (188), 36 states have internal predecessors, (188), 18 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (33), 15 states have call predecessors, (33), 18 states have call successors, (33) Word has length 128 [2024-11-08 17:47:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:47:57,586 INFO L225 Difference]: With dead ends: 572 [2024-11-08 17:47:57,586 INFO L226 Difference]: Without dead ends: 437 [2024-11-08 17:47:57,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 393 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=284, Invalid=2581, Unknown=1, NotChecked=104, Total=2970 [2024-11-08 17:47:57,589 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 190 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 220 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:47:57,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 2368 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2135 Invalid, 0 Unknown, 220 Unchecked, 18.9s Time] [2024-11-08 17:47:57,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-08 17:47:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 395. [2024-11-08 17:47:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 300 states have (on average 1.1233333333333333) internal successors, (337), 302 states have internal predecessors, (337), 56 states have call successors, (56), 36 states have call predecessors, (56), 38 states have return successors, (65), 56 states have call predecessors, (65), 54 states have call successors, (65) [2024-11-08 17:47:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 458 transitions. [2024-11-08 17:47:57,745 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 458 transitions. Word has length 128 [2024-11-08 17:47:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:47:57,745 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 458 transitions. [2024-11-08 17:47:57,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 5.081081081081081) internal successors, (188), 36 states have internal predecessors, (188), 18 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (33), 15 states have call predecessors, (33), 18 states have call successors, (33) [2024-11-08 17:47:57,746 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 458 transitions. [2024-11-08 17:47:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-08 17:47:57,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:47:57,749 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:47:57,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-08 17:47:57,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-08 17:47:58,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:58,150 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:47:58,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:47:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1302139029, now seen corresponding path program 1 times [2024-11-08 17:47:58,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:47:58,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130222621] [2024-11-08 17:47:58,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:47:58,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:47:58,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:47:58,152 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:47:58,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13847366-bf42-4eba-a8a1-1b3676482d2a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 17:47:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:47:58,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-08 17:47:58,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:47:58,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-08 17:47:58,807 INFO L378 Elim1Store]: Elim1 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2024-11-08 17:47:58,828 INFO L378 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33