./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya --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 32bit --witnessprinter.graph.data.programhash 3340815bef7e21ae2d4803d7059577c1761bb3b7b4bb24b2b34d5d0d0054fd10 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:50:24,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:50:24,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:50:24,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:50:24,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:50:24,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:50:24,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:50:24,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:50:24,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:50:24,557 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:50:24,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:50:24,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:50:24,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:50:24,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:50:24,560 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:50:24,560 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:50:24,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:50:24,561 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:50:24,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:50:24,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:50:24,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:50:24,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:50:24,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:50:24,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:50:24,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:50:24,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:50:24,565 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:50:24,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:50:24,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:50:24,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:50:24,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:50:24,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:50:24,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:50:24,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:50:24,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:50:24,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:50:24,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:50:24,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:50:24,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:50:24,568 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:50:24,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:50:24,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:50:24,569 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_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3340815bef7e21ae2d4803d7059577c1761bb3b7b4bb24b2b34d5d0d0054fd10 [2023-11-29 04:50:24,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:50:24,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:50:24,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:50:24,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:50:24,787 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:50:24,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2023-11-29 04:50:27,582 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:50:27,803 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:50:27,804 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2023-11-29 04:50:27,818 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/data/ce5d55025/3c5c93c3091f4268b8d54eb9cca3ccbb/FLAG96c37480a [2023-11-29 04:50:27,832 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/data/ce5d55025/3c5c93c3091f4268b8d54eb9cca3ccbb [2023-11-29 04:50:27,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:50:27,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:50:27,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:50:27,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:50:27,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:50:27,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:50:27" (1/1) ... [2023-11-29 04:50:27,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3fe9da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:27, skipping insertion in model container [2023-11-29 04:50:27,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:50:27" (1/1) ... [2023-11-29 04:50:27,895 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:50:28,165 WARN L240 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_2656b997-4609-4e41-b53b-7824e1980d57/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i[24151,24164] [2023-11-29 04:50:28,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:50:28,177 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:50:28,214 WARN L240 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_2656b997-4609-4e41-b53b-7824e1980d57/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i[24151,24164] [2023-11-29 04:50:28,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:50:28,240 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:50:28,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28 WrapperNode [2023-11-29 04:50:28,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:50:28,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:50:28,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:50:28,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:50:28,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,282 INFO L138 Inliner]: procedures = 126, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 120 [2023-11-29 04:50:28,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:50:28,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:50:28,283 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:50:28,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:50:28,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,317 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 6 writes are split as follows [0, 5, 1]. [2023-11-29 04:50:28,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,327 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:50:28,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:50:28,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:50:28,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:50:28,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (1/1) ... [2023-11-29 04:50:28,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:50:28,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:28,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:50:28,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:50:28,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:50:28,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:50:28,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:50:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-11-29 04:50:28,399 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-11-29 04:50:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:50:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:50:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:50:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:50:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:50:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:50:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:50:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:50:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:50:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:50:28,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 04:50:28,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 04:50:28,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 04:50:28,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:50:28,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:50:28,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:50:28,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:50:28,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:50:28,532 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:50:28,534 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:50:28,692 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:50:28,750 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:50:28,750 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 04:50:28,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:50:28 BoogieIcfgContainer [2023-11-29 04:50:28,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:50:28,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:50:28,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:50:28,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:50:28,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:50:27" (1/3) ... [2023-11-29 04:50:28,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8df6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:50:28, skipping insertion in model container [2023-11-29 04:50:28,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:50:28" (2/3) ... [2023-11-29 04:50:28,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8df6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:50:28, skipping insertion in model container [2023-11-29 04:50:28,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:50:28" (3/3) ... [2023-11-29 04:50:28,759 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2023-11-29 04:50:28,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:50:28,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:50:28,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:50:28,822 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@5683c72e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:50:28,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:50:28,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:50:28,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 04:50:28,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:28,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:28,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:28,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1696884172, now seen corresponding path program 1 times [2023-11-29 04:50:28,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:28,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802991914] [2023-11-29 04:50:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:28,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:29,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:29,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:29,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802991914] [2023-11-29 04:50:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802991914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:29,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:29,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:50:29,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692162163] [2023-11-29 04:50:29,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:29,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:50:29,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:29,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:50:29,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:50:29,097 INFO L87 Difference]: Start difference. First operand has 26 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:50:29,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:29,153 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2023-11-29 04:50:29,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:50:29,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-29 04:50:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:29,162 INFO L225 Difference]: With dead ends: 42 [2023-11-29 04:50:29,162 INFO L226 Difference]: Without dead ends: 23 [2023-11-29 04:50:29,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:50:29,169 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:29,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:50:29,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-29 04:50:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-29 04:50:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:50:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-11-29 04:50:29,204 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2023-11-29 04:50:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:29,205 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-11-29 04:50:29,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:50:29,206 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-11-29 04:50:29,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 04:50:29,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:29,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:29,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:50:29,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:29,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:29,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1523887835, now seen corresponding path program 1 times [2023-11-29 04:50:29,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:29,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367924077] [2023-11-29 04:50:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:29,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:29,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:29,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:29,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:29,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367924077] [2023-11-29 04:50:29,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367924077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:29,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:29,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:50:29,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453287164] [2023-11-29 04:50:29,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:29,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:50:29,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:29,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:50:29,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:50:29,375 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:50:29,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:29,421 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-11-29 04:50:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:50:29,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-29 04:50:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:29,423 INFO L225 Difference]: With dead ends: 40 [2023-11-29 04:50:29,423 INFO L226 Difference]: Without dead ends: 26 [2023-11-29 04:50:29,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:50:29,425 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:29,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 52 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:50:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-29 04:50:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-11-29 04:50:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:50:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-11-29 04:50:29,432 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 12 [2023-11-29 04:50:29,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:29,433 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-11-29 04:50:29,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:50:29,433 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-11-29 04:50:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 04:50:29,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:29,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:29,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:50:29,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:29,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash 815803536, now seen corresponding path program 1 times [2023-11-29 04:50:29,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:29,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263575924] [2023-11-29 04:50:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:29,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:29,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:29,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 04:50:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:50:29,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:29,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263575924] [2023-11-29 04:50:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263575924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:29,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:29,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:50:29,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071745495] [2023-11-29 04:50:29,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:29,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:50:29,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:50:29,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:50:29,627 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:50:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:29,680 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-11-29 04:50:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:50:29,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-29 04:50:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:29,681 INFO L225 Difference]: With dead ends: 37 [2023-11-29 04:50:29,681 INFO L226 Difference]: Without dead ends: 33 [2023-11-29 04:50:29,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:50:29,683 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 39 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:29,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 52 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:50:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-29 04:50:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2023-11-29 04:50:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:50:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-11-29 04:50:29,691 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2023-11-29 04:50:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:29,691 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-11-29 04:50:29,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:50:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-29 04:50:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 04:50:29,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:29,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:29,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:50:29,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:29,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1293093265, now seen corresponding path program 1 times [2023-11-29 04:50:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:29,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258800006] [2023-11-29 04:50:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:29,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:29,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:29,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 04:50:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:50:29,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258800006] [2023-11-29 04:50:29,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258800006] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825085379] [2023-11-29 04:50:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:29,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:29,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:29,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:29,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:50:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:30,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:50:30,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:50:30,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:50:30,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825085379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:30,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:30,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-29 04:50:30,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964449867] [2023-11-29 04:50:30,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:30,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:50:30,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:50:30,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:50:30,224 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:50:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:30,292 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2023-11-29 04:50:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:50:30,293 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-11-29 04:50:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:30,294 INFO L225 Difference]: With dead ends: 38 [2023-11-29 04:50:30,294 INFO L226 Difference]: Without dead ends: 34 [2023-11-29 04:50:30,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:50:30,296 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 45 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:30,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 85 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:50:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-29 04:50:30,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-29 04:50:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:50:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-11-29 04:50:30,304 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 24 [2023-11-29 04:50:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:30,305 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-11-29 04:50:30,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:50:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-11-29 04:50:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 04:50:30,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:30,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:30,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:50:30,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:30,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:30,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1038982702, now seen corresponding path program 2 times [2023-11-29 04:50:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:30,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84055084] [2023-11-29 04:50:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:30,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:30,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 04:50:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:50:30,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84055084] [2023-11-29 04:50:30,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84055084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:30,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:30,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:50:30,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925399402] [2023-11-29 04:50:30,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:30,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:50:30,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:50:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:50:30,877 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:50:30,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:30,998 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2023-11-29 04:50:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:50:31,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-29 04:50:31,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:31,003 INFO L225 Difference]: With dead ends: 49 [2023-11-29 04:50:31,003 INFO L226 Difference]: Without dead ends: 34 [2023-11-29 04:50:31,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:50:31,005 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:31,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 83 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:50:31,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-29 04:50:31,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-29 04:50:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:50:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-11-29 04:50:31,013 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 30 [2023-11-29 04:50:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:31,013 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-11-29 04:50:31,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:50:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-11-29 04:50:31,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 04:50:31,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:31,015 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 04:50:31,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:50:31,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:31,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:31,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1906109968, now seen corresponding path program 1 times [2023-11-29 04:50:31,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:31,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991064698] [2023-11-29 04:50:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 04:50:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 04:50:31,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:31,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991064698] [2023-11-29 04:50:31,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991064698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:31,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:31,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:50:31,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659150905] [2023-11-29 04:50:31,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:31,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:50:31,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:31,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:50:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:50:31,141 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:50:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:31,204 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2023-11-29 04:50:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:50:31,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2023-11-29 04:50:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:31,205 INFO L225 Difference]: With dead ends: 60 [2023-11-29 04:50:31,205 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 04:50:31,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:50:31,207 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:31,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 59 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:50:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 04:50:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-29 04:50:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:50:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-11-29 04:50:31,216 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 36 [2023-11-29 04:50:31,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:31,216 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-11-29 04:50:31,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:50:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-11-29 04:50:31,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 04:50:31,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:31,218 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-29 04:50:31,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:50:31,218 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:31,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:31,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1465101296, now seen corresponding path program 1 times [2023-11-29 04:50:31,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:31,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438652332] [2023-11-29 04:50:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:31,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:31,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 04:50:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:50:31,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:31,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438652332] [2023-11-29 04:50:31,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438652332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:31,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002734875] [2023-11-29 04:50:31,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:31,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:31,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:31,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:31,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:50:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:32,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 93 conjunts are in the unsatisfiable core [2023-11-29 04:50:32,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:32,085 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 [2023-11-29 04:50:32,239 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 [2023-11-29 04:50:32,293 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:50:32,293 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 [2023-11-29 04:50:32,347 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 19 treesize of output 11 [2023-11-29 04:50:32,410 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 20 treesize of output 15 [2023-11-29 04:50:32,702 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 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-29 04:50:32,712 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 23 treesize of output 15 [2023-11-29 04:50:32,891 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:50:32,896 INFO L349 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2023-11-29 04:50:32,897 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 31 treesize of output 14 [2023-11-29 04:50:32,910 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:50:32,911 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:50:32,911 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 27 treesize of output 7 [2023-11-29 04:50:33,005 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 15 treesize of output 7 [2023-11-29 04:50:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:50:33,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:33,171 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 64 treesize of output 52 [2023-11-29 04:50:33,418 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:50:33,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002734875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:33,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:33,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19, 8] total 29 [2023-11-29 04:50:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336820000] [2023-11-29 04:50:33,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:33,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 04:50:33,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:33,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 04:50:33,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2023-11-29 04:50:33,421 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 29 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:50:34,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:34,049 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2023-11-29 04:50:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 04:50:34,050 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 40 [2023-11-29 04:50:34,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:34,052 INFO L225 Difference]: With dead ends: 117 [2023-11-29 04:50:34,052 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 04:50:34,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=223, Invalid=1417, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 04:50:34,054 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 89 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:34,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 184 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:50:34,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 04:50:34,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 45. [2023-11-29 04:50:34,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:50:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2023-11-29 04:50:34,062 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 40 [2023-11-29 04:50:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:34,063 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2023-11-29 04:50:34,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.923076923076923) internal successors, (76), 25 states have internal predecessors, (76), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:50:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2023-11-29 04:50:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 04:50:34,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:34,064 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-11-29 04:50:34,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:50:34,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:34,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:34,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:34,265 INFO L85 PathProgramCache]: Analyzing trace with hash 721078123, now seen corresponding path program 1 times [2023-11-29 04:50:34,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:34,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824914820] [2023-11-29 04:50:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 04:50:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:50:34,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:34,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824914820] [2023-11-29 04:50:34,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824914820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:34,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314025410] [2023-11-29 04:50:34,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:34,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:34,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:34,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:34,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:50:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:34,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:50:34,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:34,686 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 38 treesize of output 26 [2023-11-29 04:50:34,690 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 30 treesize of output 18 [2023-11-29 04:50:34,700 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 15 treesize of output 7 [2023-11-29 04:50:34,704 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 15 treesize of output 7 [2023-11-29 04:50:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:50:34,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:34,756 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2023-11-29 04:50:34,757 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 19 treesize of output 19 [2023-11-29 04:50:34,765 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 19 treesize of output 1 [2023-11-29 04:50:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:50:34,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314025410] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:34,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:34,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2023-11-29 04:50:34,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873373006] [2023-11-29 04:50:34,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:34,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:50:34,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:34,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:50:34,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:50:34,779 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:50:34,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:34,901 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2023-11-29 04:50:34,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:50:34,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2023-11-29 04:50:34,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:34,902 INFO L225 Difference]: With dead ends: 83 [2023-11-29 04:50:34,902 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 04:50:34,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:50:34,903 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:34,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 77 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:50:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 04:50:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2023-11-29 04:50:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:50:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2023-11-29 04:50:34,913 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 42 [2023-11-29 04:50:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:34,914 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2023-11-29 04:50:34,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:50:34,914 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2023-11-29 04:50:34,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 04:50:34,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:34,915 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:34,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:50:35,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:35,122 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:35,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:35,122 INFO L85 PathProgramCache]: Analyzing trace with hash 336492294, now seen corresponding path program 2 times [2023-11-29 04:50:35,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366041137] [2023-11-29 04:50:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:35,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:36,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 04:50:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 04:50:36,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366041137] [2023-11-29 04:50:36,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366041137] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686662473] [2023-11-29 04:50:36,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:50:36,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:36,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:36,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:36,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:50:36,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:50:36,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:50:36,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 125 conjunts are in the unsatisfiable core [2023-11-29 04:50:36,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:36,457 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 [2023-11-29 04:50:36,644 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 [2023-11-29 04:50:36,695 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:50:36,695 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 [2023-11-29 04:50:36,762 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 19 treesize of output 11 [2023-11-29 04:50:36,767 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 [2023-11-29 04:50:36,845 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2023-11-29 04:50:36,846 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 1 case distinctions, treesize of input 75 treesize of output 45 [2023-11-29 04:50:36,854 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 39 treesize of output 30 [2023-11-29 04:50:37,203 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:50:37,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:50:37,205 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:50:37,206 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:50:37,210 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 04:50:37,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 35 [2023-11-29 04:50:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 04:50:37,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:37,388 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 12 treesize of output 8 [2023-11-29 04:50:37,549 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 133 treesize of output 109 [2023-11-29 04:50:37,552 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 113 treesize of output 93 [2023-11-29 04:50:37,892 INFO L349 Elim1Store]: treesize reduction 1506, result has 34.1 percent of original size [2023-11-29 04:50:37,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 18988 treesize of output 16064 [2023-11-29 04:50:44,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:50:44,775 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 1 case distinctions, treesize of input 19 treesize of output 8 [2023-11-29 04:50:44,778 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 [2023-11-29 04:50:44,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686662473] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:44,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:50:44,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2023-11-29 04:50:44,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079708681] [2023-11-29 04:50:44,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:44,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 04:50:44,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:44,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 04:50:44,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 04:50:44,851 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 31 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:50:45,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:45,330 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2023-11-29 04:50:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:50:45,331 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2023-11-29 04:50:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:45,332 INFO L225 Difference]: With dead ends: 109 [2023-11-29 04:50:45,332 INFO L226 Difference]: Without dead ends: 74 [2023-11-29 04:50:45,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 04:50:45,334 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:45,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 201 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:50:45,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-29 04:50:45,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2023-11-29 04:50:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 61 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:50:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2023-11-29 04:50:45,348 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 44 [2023-11-29 04:50:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:45,349 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2023-11-29 04:50:45,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 25 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:50:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2023-11-29 04:50:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 04:50:45,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:45,350 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:45,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 04:50:45,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:45,551 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:45,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:45,551 INFO L85 PathProgramCache]: Analyzing trace with hash 116698081, now seen corresponding path program 3 times [2023-11-29 04:50:45,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:45,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339088331] [2023-11-29 04:50:45,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:45,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 04:50:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 04:50:46,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339088331] [2023-11-29 04:50:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339088331] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912612533] [2023-11-29 04:50:46,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:50:46,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:46,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:46,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:46,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:50:46,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 04:50:46,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:50:46,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 121 conjunts are in the unsatisfiable core [2023-11-29 04:50:46,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:46,558 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 [2023-11-29 04:50:46,737 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 04:50:46,737 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 [2023-11-29 04:50:46,779 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 [2023-11-29 04:50:46,786 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 [2023-11-29 04:50:46,865 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2023-11-29 04:50:46,865 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 1 case distinctions, treesize of input 75 treesize of output 45 [2023-11-29 04:50:46,870 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 39 treesize of output 30 [2023-11-29 04:50:47,494 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2023-11-29 04:50:47,494 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 49 [2023-11-29 04:50:47,502 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 19 treesize of output 7 [2023-11-29 04:50:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 04:50:47,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:47,716 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 133 treesize of output 109 [2023-11-29 04:50:47,719 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 113 treesize of output 93 [2023-11-29 04:50:48,052 INFO L349 Elim1Store]: treesize reduction 1506, result has 34.1 percent of original size [2023-11-29 04:50:48,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 18988 treesize of output 16064 [2023-11-29 04:50:48,307 INFO L349 Elim1Store]: treesize reduction 22, result has 60.0 percent of original size [2023-11-29 04:50:48,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 12357 treesize of output 11841 [2023-11-29 04:50:52,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912612533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:52,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:50:52,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 30 [2023-11-29 04:50:52,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273854806] [2023-11-29 04:50:52,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:52,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 04:50:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:52,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 04:50:52,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1143, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 04:50:52,641 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 30 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 26 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:50:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:53,909 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2023-11-29 04:50:53,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 04:50:53,910 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 26 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2023-11-29 04:50:53,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:53,911 INFO L225 Difference]: With dead ends: 149 [2023-11-29 04:50:53,912 INFO L226 Difference]: Without dead ends: 120 [2023-11-29 04:50:53,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=342, Invalid=2628, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 04:50:53,914 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 102 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:53,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 225 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:50:53,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-29 04:50:53,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 92. [2023-11-29 04:50:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 87 states have internal predecessors, (103), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:50:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 109 transitions. [2023-11-29 04:50:53,935 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 109 transitions. Word has length 46 [2023-11-29 04:50:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:53,935 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 109 transitions. [2023-11-29 04:50:53,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 26 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:50:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 109 transitions. [2023-11-29 04:50:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 04:50:53,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:53,936 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:53,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 04:50:54,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:54,137 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:54,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1985711900, now seen corresponding path program 4 times [2023-11-29 04:50:54,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:54,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235529062] [2023-11-29 04:50:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:50:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 04:50:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 04:50:55,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:55,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235529062] [2023-11-29 04:50:55,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235529062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:55,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187987624] [2023-11-29 04:50:55,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:50:55,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:55,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:55,064 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:55,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:50:55,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:50:55,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:50:55,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-29 04:50:55,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:56,153 INFO L349 Elim1Store]: treesize reduction 246, result has 22.6 percent of original size [2023-11-29 04:50:56,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 9 case distinctions, treesize of input 534 treesize of output 236 [2023-11-29 04:50:56,199 INFO L349 Elim1Store]: treesize reduction 276, result has 13.2 percent of original size [2023-11-29 04:50:56,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 596 treesize of output 221 [2023-11-29 04:50:56,856 INFO L349 Elim1Store]: treesize reduction 99, result has 62.6 percent of original size [2023-11-29 04:50:56,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 341 treesize of output 327 [2023-11-29 04:50:56,977 INFO L349 Elim1Store]: treesize reduction 113, result has 47.9 percent of original size [2023-11-29 04:50:56,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 300 treesize of output 249 [2023-11-29 04:50:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:50:59,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:01,748 INFO L349 Elim1Store]: treesize reduction 93, result has 86.1 percent of original size [2023-11-29 04:51:01,749 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 17 new quantified variables, introduced 36 case distinctions, treesize of input 2209 treesize of output 1458 [2023-11-29 04:51:02,582 INFO L349 Elim1Store]: treesize reduction 223, result has 67.4 percent of original size [2023-11-29 04:51:02,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 15 new quantified variables, introduced 45 case distinctions, treesize of input 3102 treesize of output 2026 [2023-11-29 04:55:58,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-29 04:55:58,607 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-29 04:55:58,608 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 04:55:58,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:55:58,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:55:58,809 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_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/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:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) 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:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) 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:338) 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$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) 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:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) 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) ... 69 more [2023-11-29 04:55:58,812 INFO L158 Benchmark]: Toolchain (without parser) took 330976.11ms. Allocated memory was 151.0MB in the beginning and 570.4MB in the end (delta: 419.4MB). Free memory was 112.2MB in the beginning and 411.5MB in the end (delta: -299.3MB). Peak memory consumption was 353.9MB. Max. memory is 16.1GB. [2023-11-29 04:55:58,812 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:55:58,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.00ms. Allocated memory is still 151.0MB. Free memory was 112.2MB in the beginning and 94.4MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 04:55:58,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.56ms. Allocated memory is still 151.0MB. Free memory was 94.4MB in the beginning and 92.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:55:58,813 INFO L158 Benchmark]: Boogie Preprocessor took 55.70ms. Allocated memory is still 151.0MB. Free memory was 92.3MB in the beginning and 89.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:55:58,813 INFO L158 Benchmark]: RCFGBuilder took 411.64ms. Allocated memory is still 151.0MB. Free memory was 89.5MB in the beginning and 118.4MB in the end (delta: -28.9MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2023-11-29 04:55:58,813 INFO L158 Benchmark]: TraceAbstraction took 330058.74ms. Allocated memory was 151.0MB in the beginning and 570.4MB in the end (delta: 419.4MB). Free memory was 117.7MB in the beginning and 411.5MB in the end (delta: -293.8MB). Peak memory consumption was 356.2MB. Max. memory is 16.1GB. [2023-11-29 04:55:58,815 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.00ms. Allocated memory is still 151.0MB. Free memory was 112.2MB in the beginning and 94.4MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.56ms. Allocated memory is still 151.0MB. Free memory was 94.4MB in the beginning and 92.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.70ms. Allocated memory is still 151.0MB. Free memory was 92.3MB in the beginning and 89.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 411.64ms. Allocated memory is still 151.0MB. Free memory was 89.5MB in the beginning and 118.4MB in the end (delta: -28.9MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. * TraceAbstraction took 330058.74ms. Allocated memory was 151.0MB in the beginning and 570.4MB in the end (delta: 419.4MB). Free memory was 117.7MB in the beginning and 411.5MB in the end (delta: -293.8MB). Peak memory consumption was 356.2MB. 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_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/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_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/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_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya --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 32bit --witnessprinter.graph.data.programhash 3340815bef7e21ae2d4803d7059577c1761bb3b7b4bb24b2b34d5d0d0054fd10 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:56:00,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:56:00,531 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 04:56:00,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:56:00,536 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:56:00,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:56:00,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:56:00,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:56:00,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:56:00,564 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:56:00,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:56:00,565 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:56:00,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:56:00,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:56:00,567 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:56:00,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:56:00,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:56:00,568 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:56:00,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:56:00,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:56:00,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:56:00,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:56:00,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:56:00,572 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:56:00,572 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:56:00,572 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:56:00,573 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:56:00,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:56:00,573 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:56:00,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:56:00,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:56:00,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:56:00,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:56:00,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:56:00,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:56:00,575 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:56:00,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:56:00,576 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:56:00,576 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:56:00,576 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:56:00,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:56:00,577 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:56:00,577 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:56:00,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:56:00,577 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:56:00,578 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_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3340815bef7e21ae2d4803d7059577c1761bb3b7b4bb24b2b34d5d0d0054fd10 [2023-11-29 04:56:00,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:56:00,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:56:00,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:56:00,882 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:56:00,883 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:56:00,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2023-11-29 04:56:03,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:56:03,863 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:56:03,864 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i [2023-11-29 04:56:03,879 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/data/fbbd3aa01/24e6b34013fc4c8b98d7794342d78825/FLAGdabde9983 [2023-11-29 04:56:03,891 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/data/fbbd3aa01/24e6b34013fc4c8b98d7794342d78825 [2023-11-29 04:56:03,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:56:03,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:56:03,897 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:56:03,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:56:03,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:56:03,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:56:03" (1/1) ... [2023-11-29 04:56:03,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c51dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:03, skipping insertion in model container [2023-11-29 04:56:03,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:56:03" (1/1) ... [2023-11-29 04:56:03,942 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:56:04,209 WARN L240 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_2656b997-4609-4e41-b53b-7824e1980d57/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i[24151,24164] [2023-11-29 04:56:04,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:56:04,226 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:56:04,265 WARN L240 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_2656b997-4609-4e41-b53b-7824e1980d57/sv-benchmarks/c/list-simple/sll2c_remove_all_reverse.i[24151,24164] [2023-11-29 04:56:04,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:56:04,302 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:56:04,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04 WrapperNode [2023-11-29 04:56:04,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:56:04,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:56:04,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:56:04,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:56:04,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,353 INFO L138 Inliner]: procedures = 129, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2023-11-29 04:56:04,353 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:56:04,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:56:04,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:56:04,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:56:04,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,371 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,390 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 9, 9]. 45 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 6 writes are split as follows [0, 1, 5]. [2023-11-29 04:56:04,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,402 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,416 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:56:04,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:56:04,417 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:56:04,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:56:04,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (1/1) ... [2023-11-29 04:56:04,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:56:04,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:56:04,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:56:04,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:56:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-11-29 04:56:04,481 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-11-29 04:56:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:56:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:56:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:56:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:56:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:56:04,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:56:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:56:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:56:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:56:04,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:56:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 04:56:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 04:56:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 04:56:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 04:56:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 04:56:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 04:56:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:56:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 04:56:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 04:56:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:56:04,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:56:04,622 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:56:04,625 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:56:04,846 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:56:04,877 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:56:04,877 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 04:56:04,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:56:04 BoogieIcfgContainer [2023-11-29 04:56:04,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:56:04,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:56:04,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:56:04,884 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:56:04,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:56:03" (1/3) ... [2023-11-29 04:56:04,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b4e39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:56:04, skipping insertion in model container [2023-11-29 04:56:04,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:56:04" (2/3) ... [2023-11-29 04:56:04,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b4e39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:56:04, skipping insertion in model container [2023-11-29 04:56:04,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:56:04" (3/3) ... [2023-11-29 04:56:04,887 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2023-11-29 04:56:04,905 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:56:04,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:56:04,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:56:04,958 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@8fb6516, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:56:04,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:56:04,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:56:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 04:56:04,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:04,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:04,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:04,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1696884172, now seen corresponding path program 1 times [2023-11-29 04:56:04,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:04,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33324902] [2023-11-29 04:56:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:04,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:04,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:04,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:56:04,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 04:56:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:05,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:56:05,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:05,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:56:05,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:05,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33324902] [2023-11-29 04:56:05,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33324902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:56:05,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:56:05,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:56:05,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669593337] [2023-11-29 04:56:05,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:56:05,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:56:05,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:56:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:56:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:56:05,181 INFO L87 Difference]: Start difference. First operand has 26 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:56:05,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:05,237 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2023-11-29 04:56:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:56:05,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-29 04:56:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:05,247 INFO L225 Difference]: With dead ends: 42 [2023-11-29 04:56:05,247 INFO L226 Difference]: Without dead ends: 23 [2023-11-29 04:56:05,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:56:05,253 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:56:05,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:56:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-29 04:56:05,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-29 04:56:05,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:56:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-11-29 04:56:05,291 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 12 [2023-11-29 04:56:05,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:05,292 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-11-29 04:56:05,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:56:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-11-29 04:56:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 04:56:05,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:05,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:05,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:56:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:05,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:05,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1523887835, now seen corresponding path program 1 times [2023-11-29 04:56:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:05,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125643812] [2023-11-29 04:56:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:05,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:05,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:05,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:56:05,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 04:56:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:05,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:56:05,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:05,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:56:05,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:05,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125643812] [2023-11-29 04:56:05,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125643812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:56:05,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:56:05,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:56:05,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195673921] [2023-11-29 04:56:05,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:56:05,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:56:05,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:56:05,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:56:05,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:56:05,670 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:56:05,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:05,750 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-11-29 04:56:05,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:56:05,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-29 04:56:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:05,752 INFO L225 Difference]: With dead ends: 40 [2023-11-29 04:56:05,752 INFO L226 Difference]: Without dead ends: 26 [2023-11-29 04:56:05,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:56:05,754 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:56:05,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:56:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-29 04:56:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-11-29 04:56:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:56:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-11-29 04:56:05,761 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 12 [2023-11-29 04:56:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:05,761 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-11-29 04:56:05,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:56:05,762 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-11-29 04:56:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 04:56:05,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:05,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:05,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:56:05,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:05,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:05,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash 815803536, now seen corresponding path program 1 times [2023-11-29 04:56:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:05,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221382936] [2023-11-29 04:56:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:05,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:05,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:05,966 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:56:05,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 04:56:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:06,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:56:06,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:56:06,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:56:06,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221382936] [2023-11-29 04:56:06,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221382936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:56:06,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:56:06,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:56:06,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340372636] [2023-11-29 04:56:06,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:56:06,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:56:06,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:56:06,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:56:06,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:56:06,165 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:56:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:06,226 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-11-29 04:56:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:56:06,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-29 04:56:06,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:06,228 INFO L225 Difference]: With dead ends: 37 [2023-11-29 04:56:06,228 INFO L226 Difference]: Without dead ends: 33 [2023-11-29 04:56:06,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:56:06,230 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 39 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 42 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 [2023-11-29 04:56:06,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 42 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:56:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-29 04:56:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2023-11-29 04:56:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:56:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-11-29 04:56:06,238 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 18 [2023-11-29 04:56:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:06,239 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-11-29 04:56:06,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:56:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-29 04:56:06,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 04:56:06,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:06,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:06,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 04:56:06,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:06,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:06,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:06,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1293093265, now seen corresponding path program 1 times [2023-11-29 04:56:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:06,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636682161] [2023-11-29 04:56:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:06,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:06,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:06,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:56:06,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 04:56:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:06,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:56:06,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:56:06,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:56:06,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:06,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636682161] [2023-11-29 04:56:06,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636682161] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:56:06,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:56:06,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 04:56:06,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791883577] [2023-11-29 04:56:06,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:56:06,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:56:06,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:56:06,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:56:06,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:56:06,758 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:56:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:06,896 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2023-11-29 04:56:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:56:06,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-11-29 04:56:06,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:06,897 INFO L225 Difference]: With dead ends: 46 [2023-11-29 04:56:06,897 INFO L226 Difference]: Without dead ends: 42 [2023-11-29 04:56:06,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:56:06,899 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 84 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:56:06,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 78 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:56:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-29 04:56:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2023-11-29 04:56:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:56:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-11-29 04:56:06,908 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 24 [2023-11-29 04:56:06,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:06,908 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-11-29 04:56:06,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 04:56:06,909 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-11-29 04:56:06,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 04:56:06,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:06,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:06,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-29 04:56:07,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:07,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:07,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:07,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1038982702, now seen corresponding path program 2 times [2023-11-29 04:56:07,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:07,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359225772] [2023-11-29 04:56:07,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:56:07,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:07,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:07,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:56:07,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 04:56:07,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:56:07,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:56:07,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:56:07,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:07,354 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:56:07,360 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 11 treesize of output 7 [2023-11-29 04:56:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:56:07,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:56:07,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:07,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359225772] [2023-11-29 04:56:07,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359225772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:56:07,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:56:07,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:56:07,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863189106] [2023-11-29 04:56:07,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:56:07,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:56:07,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:56:07,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:56:07,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:56:07,416 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:56:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:07,620 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2023-11-29 04:56:07,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:56:07,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-29 04:56:07,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:07,622 INFO L225 Difference]: With dead ends: 49 [2023-11-29 04:56:07,622 INFO L226 Difference]: Without dead ends: 34 [2023-11-29 04:56:07,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:56:07,623 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:56:07,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 74 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:56:07,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-29 04:56:07,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-29 04:56:07,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:56:07,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-11-29 04:56:07,632 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 30 [2023-11-29 04:56:07,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:07,633 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-11-29 04:56:07,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:56:07,633 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-11-29 04:56:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 04:56:07,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:07,634 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 04:56:07,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-29 04:56:07,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:07,835 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:07,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1906109968, now seen corresponding path program 1 times [2023-11-29 04:56:07,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:07,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355357916] [2023-11-29 04:56:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:07,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:07,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:07,837 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:56:07,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 04:56:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:08,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:56:08,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:08,152 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 15 treesize of output 7 [2023-11-29 04:56:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:56:08,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:56:08,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:08,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355357916] [2023-11-29 04:56:08,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355357916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:56:08,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:56:08,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:56:08,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029920911] [2023-11-29 04:56:08,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:56:08,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:56:08,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:56:08,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:56:08,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:56:08,184 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:56:08,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:08,552 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-11-29 04:56:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:56:08,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2023-11-29 04:56:08,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:08,554 INFO L225 Difference]: With dead ends: 62 [2023-11-29 04:56:08,554 INFO L226 Difference]: Without dead ends: 40 [2023-11-29 04:56:08,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:56:08,556 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:56:08,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 126 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:56:08,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-29 04:56:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-11-29 04:56:08,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:56:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-11-29 04:56:08,567 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 36 [2023-11-29 04:56:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:08,567 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-11-29 04:56:08,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:56:08,568 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-11-29 04:56:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 04:56:08,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:08,569 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-29 04:56:08,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 04:56:08,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:08,770 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:08,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1465101296, now seen corresponding path program 1 times [2023-11-29 04:56:08,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:08,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454218882] [2023-11-29 04:56:08,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:08,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:08,772 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:56:08,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 04:56:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:08,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:56:08,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:09,145 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 23 treesize of output 15 [2023-11-29 04:56:09,158 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 19 treesize of output 11 [2023-11-29 04:56:09,284 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 45 treesize of output 25 [2023-11-29 04:56:09,289 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 7 treesize of output 3 [2023-11-29 04:56:09,292 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 15 treesize of output 7 [2023-11-29 04:56:09,324 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:56:09,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:09,489 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 64 treesize of output 52 [2023-11-29 04:56:09,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:56:09,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:56:09,643 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 04:56:09,643 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 11 treesize of output 11 [2023-11-29 04:56:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:56:09,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:09,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454218882] [2023-11-29 04:56:09,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454218882] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:56:09,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:56:09,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 17 [2023-11-29 04:56:09,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665855312] [2023-11-29 04:56:09,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:56:09,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:56:09,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:56:09,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:56:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:56:09,737 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:56:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:10,617 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2023-11-29 04:56:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:56:10,618 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-11-29 04:56:10,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:10,620 INFO L225 Difference]: With dead ends: 71 [2023-11-29 04:56:10,620 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 04:56:10,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2023-11-29 04:56:10,621 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:56:10,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 213 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:56:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 04:56:10,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2023-11-29 04:56:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:56:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2023-11-29 04:56:10,632 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 40 [2023-11-29 04:56:10,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:10,632 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2023-11-29 04:56:10,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:56:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2023-11-29 04:56:10,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 04:56:10,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:10,634 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2023-11-29 04:56:10,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-29 04:56:10,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:10,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:10,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:10,840 INFO L85 PathProgramCache]: Analyzing trace with hash 721078123, now seen corresponding path program 1 times [2023-11-29 04:56:10,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:10,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893265544] [2023-11-29 04:56:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:10,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:10,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:10,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:56:10,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 04:56:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:11,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:56:11,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:11,116 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 38 treesize of output 26 [2023-11-29 04:56:11,120 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 30 treesize of output 18 [2023-11-29 04:56:11,151 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 15 treesize of output 7 [2023-11-29 04:56:11,157 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 15 treesize of output 7 [2023-11-29 04:56:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:56:11,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:11,250 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2023-11-29 04:56:11,250 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 19 treesize of output 19 [2023-11-29 04:56:11,265 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 19 treesize of output 1 [2023-11-29 04:56:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 04:56:11,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:11,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893265544] [2023-11-29 04:56:11,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893265544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:56:11,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:56:11,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-29 04:56:11,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270042909] [2023-11-29 04:56:11,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:56:11,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:56:11,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:56:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:56:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:56:11,281 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:56:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:11,603 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2023-11-29 04:56:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:56:11,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 42 [2023-11-29 04:56:11,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:11,605 INFO L225 Difference]: With dead ends: 83 [2023-11-29 04:56:11,605 INFO L226 Difference]: Without dead ends: 54 [2023-11-29 04:56:11,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:56:11,606 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:56:11,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 70 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:56:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-29 04:56:11,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2023-11-29 04:56:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:56:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2023-11-29 04:56:11,616 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 42 [2023-11-29 04:56:11,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:11,616 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2023-11-29 04:56:11,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:56:11,616 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2023-11-29 04:56:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-29 04:56:11,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:11,618 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:11,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 04:56:11,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:11,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:11,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:11,824 INFO L85 PathProgramCache]: Analyzing trace with hash 336492294, now seen corresponding path program 2 times [2023-11-29 04:56:11,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:11,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178723030] [2023-11-29 04:56:11,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:56:11,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:11,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:11,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:56:11,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 04:56:12,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:56:12,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:56:12,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 04:56:12,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:12,068 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 7 [2023-11-29 04:56:12,181 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:56:12,181 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 13 treesize of output 13 [2023-11-29 04:56:12,208 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 [2023-11-29 04:56:12,218 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 [2023-11-29 04:56:12,288 INFO L349 Elim1Store]: treesize reduction 77, result has 16.3 percent of original size [2023-11-29 04:56:12,288 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 1 case distinctions, treesize of input 123 treesize of output 77 [2023-11-29 04:56:12,301 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 87 treesize of output 65 [2023-11-29 04:56:12,597 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 56 [2023-11-29 04:56:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 04:56:12,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:13,100 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 133 treesize of output 109 [2023-11-29 04:56:13,103 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 113 treesize of output 93 [2023-11-29 04:56:15,345 INFO L349 Elim1Store]: treesize reduction 1506, result has 34.1 percent of original size [2023-11-29 04:56:15,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 18544 treesize of output 15620 [2023-11-29 04:56:15,967 INFO L349 Elim1Store]: treesize reduction 22, result has 60.0 percent of original size [2023-11-29 04:56:15,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20917 treesize of output 19765 [2023-11-29 04:56:24,998 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:24,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178723030] [2023-11-29 04:56:24,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178723030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:56:24,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [635129463] [2023-11-29 04:56:24,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:56:24,999 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:56:24,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:56:25,000 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:56:25,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-29 04:56:25,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:56:25,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:56:25,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 04:56:25,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:25,359 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 7 [2023-11-29 04:56:25,659 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:56:25,659 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 13 treesize of output 13 [2023-11-29 04:56:25,762 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 [2023-11-29 04:56:25,783 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 [2023-11-29 04:56:25,947 INFO L349 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2023-11-29 04:56:25,947 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 1 case distinctions, treesize of input 91 treesize of output 61 [2023-11-29 04:56:25,956 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 63 treesize of output 49 [2023-11-29 04:56:26,450 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 41 [2023-11-29 04:56:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 04:56:26,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:26,740 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 133 treesize of output 109 [2023-11-29 04:56:26,743 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 113 treesize of output 93 [2023-11-29 04:56:29,770 INFO L349 Elim1Store]: treesize reduction 1506, result has 34.1 percent of original size [2023-11-29 04:56:29,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 18544 treesize of output 15620 [2023-11-29 04:56:30,220 INFO L349 Elim1Store]: treesize reduction 22, result has 60.0 percent of original size [2023-11-29 04:56:30,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20917 treesize of output 19765 [2023-11-29 04:56:39,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [635129463] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:56:39,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:56:39,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 28 [2023-11-29 04:56:39,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434750118] [2023-11-29 04:56:39,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:56:39,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 04:56:39,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:56:39,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 04:56:39,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 04:56:39,164 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 28 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:56:40,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:40,730 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2023-11-29 04:56:40,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 04:56:40,730 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2023-11-29 04:56:40,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:40,732 INFO L225 Difference]: With dead ends: 109 [2023-11-29 04:56:40,732 INFO L226 Difference]: Without dead ends: 74 [2023-11-29 04:56:40,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 04:56:40,733 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:56:40,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 186 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 399 Invalid, 1 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:56:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-29 04:56:40,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2023-11-29 04:56:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 61 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:56:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2023-11-29 04:56:40,751 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 44 [2023-11-29 04:56:40,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:40,751 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2023-11-29 04:56:40,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:56:40,751 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2023-11-29 04:56:40,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 04:56:40,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:40,753 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:40,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 04:56:40,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-11-29 04:56:41,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:56:41,154 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:41,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash 116698081, now seen corresponding path program 3 times [2023-11-29 04:56:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:41,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180705854] [2023-11-29 04:56:41,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:56:41,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:56:41,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:41,155 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:56:41,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 04:56:41,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 04:56:41,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:56:41,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 04:56:41,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:41,482 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 7 [2023-11-29 04:56:41,604 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:56:41,605 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 13 treesize of output 13 [2023-11-29 04:56:41,650 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 [2023-11-29 04:56:41,656 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 [2023-11-29 04:56:41,732 INFO L349 Elim1Store]: treesize reduction 57, result has 16.2 percent of original size [2023-11-29 04:56:41,732 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 1 case distinctions, treesize of input 91 treesize of output 61 [2023-11-29 04:56:41,737 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 63 treesize of output 49 [2023-11-29 04:56:42,013 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 97 treesize of output 57 [2023-11-29 04:56:42,021 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-29 04:56:42,021 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 25 [2023-11-29 04:56:42,026 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 04:56:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 04:56:42,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:42,324 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 128 treesize of output 104 [2023-11-29 04:56:42,327 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 108 treesize of output 84 [2023-11-29 04:56:42,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:56:42,473 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 840 treesize of output 720 [2023-11-29 04:56:42,588 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 04:56:42,588 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 421 treesize of output 1 [2023-11-29 04:56:46,949 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:46,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180705854] [2023-11-29 04:56:46,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180705854] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:56:46,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1394133031] [2023-11-29 04:56:46,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:56:46,950 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:56:46,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:56:46,951 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:56:46,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-29 04:56:47,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 04:56:47,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:56:47,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 04:56:47,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:47,395 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 7 [2023-11-29 04:56:47,642 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:56:47,643 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 13 treesize of output 13 [2023-11-29 04:56:47,708 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 [2023-11-29 04:56:47,724 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 [2023-11-29 04:56:47,844 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2023-11-29 04:56:47,844 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 1 case distinctions, treesize of input 75 treesize of output 45 [2023-11-29 04:56:47,850 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 39 treesize of output 30 [2023-11-29 04:56:48,772 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 7 treesize of output 3 [2023-11-29 04:56:49,149 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2023-11-29 04:56:49,150 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 49 [2023-11-29 04:56:49,157 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 19 treesize of output 7 [2023-11-29 04:56:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 04:56:49,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:50,048 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 133 treesize of output 109 [2023-11-29 04:56:50,051 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 113 treesize of output 93 [2023-11-29 04:56:54,406 INFO L349 Elim1Store]: treesize reduction 1506, result has 34.1 percent of original size [2023-11-29 04:56:54,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 18544 treesize of output 15620 [2023-11-29 04:56:54,803 INFO L349 Elim1Store]: treesize reduction 22, result has 60.0 percent of original size [2023-11-29 04:56:54,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20917 treesize of output 19765 [2023-11-29 04:57:15,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1394133031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:57:15,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:57:15,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 30 [2023-11-29 04:57:15,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951608943] [2023-11-29 04:57:15,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:57:15,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 04:57:15,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:15,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 04:57:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1982, Unknown=3, NotChecked=0, Total=2162 [2023-11-29 04:57:15,224 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 30 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:57:16,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:16,605 INFO L93 Difference]: Finished difference Result 102 states and 119 transitions. [2023-11-29 04:57:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:57:16,606 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 46 [2023-11-29 04:57:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:16,607 INFO L225 Difference]: With dead ends: 102 [2023-11-29 04:57:16,607 INFO L226 Difference]: Without dead ends: 57 [2023-11-29 04:57:16,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=237, Invalid=2412, Unknown=3, NotChecked=0, Total=2652 [2023-11-29 04:57:16,609 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:57:16,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 258 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:57:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-29 04:57:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2023-11-29 04:57:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:57:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2023-11-29 04:57:16,621 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 46 [2023-11-29 04:57:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:16,622 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2023-11-29 04:57:16,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 04:57:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2023-11-29 04:57:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 04:57:16,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:16,623 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:57:16,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 04:57:16,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-11-29 04:57:17,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:57:17,024 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:57:17,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:17,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1311629499, now seen corresponding path program 4 times [2023-11-29 04:57:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:17,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266036210] [2023-11-29 04:57:17,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:57:17,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:57:17,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:17,026 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 04:57:17,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 04:57:17,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:57:17,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:57:17,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:57:17,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 04:57:17,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:57:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 04:57:17,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266036210] [2023-11-29 04:57:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266036210] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:57:17,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:57:17,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 04:57:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492832626] [2023-11-29 04:57:17,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:57:17,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:57:17,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:57:17,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:57:17,244 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 04:57:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:17,304 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2023-11-29 04:57:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:57:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2023-11-29 04:57:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:17,306 INFO L225 Difference]: With dead ends: 59 [2023-11-29 04:57:17,306 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 04:57:17,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:57:17,307 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 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 [2023-11-29 04:57:17,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:57:17,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 04:57:17,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 04:57:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 04:57:17,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2023-11-29 04:57:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:17,308 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 04:57:17,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 04:57:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 04:57:17,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 04:57:17,310 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 04:57:17,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 04:57:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:57:17,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 04:57:18,276 INFO L899 garLoopResultBuilder]: For program point L605-1(lines 605 607) no Hoare annotation was computed. [2023-11-29 04:57:18,276 INFO L895 garLoopResultBuilder]: At program point L605-3(lines 605 607) the Hoare annotation is: (let ((.cse2 (= (select (select |#memory_$Pointer$#1.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) (_ bv0 32))) (.cse3 (= |ULTIMATE.start_main_~#s~0#1.offset| |ULTIMATE.start_sll_circular_remove_last_~head#1.offset|)) (.cse4 (= |ULTIMATE.start_main_~#s~0#1.base| |ULTIMATE.start_sll_circular_remove_last_~head#1.base|)) (.cse5 (= (_ bv2 32) |ULTIMATE.start_main_~len~0#1|))) (or (let ((.cse0 (select (select |#memory_$Pointer$#1.base| |ULTIMATE.start_sll_circular_remove_last_~head#1.base|) |ULTIMATE.start_sll_circular_remove_last_~head#1.offset|)) (.cse1 (select (select |#memory_$Pointer$#1.offset| |ULTIMATE.start_sll_circular_remove_last_~head#1.base|) |ULTIMATE.start_sll_circular_remove_last_~head#1.offset|))) (and (= .cse0 |ULTIMATE.start_sll_circular_remove_last_~snd_to_last~0#1.base|) (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32)) (= (select (select |#memory_$Pointer$#2.base| .cse0) .cse1) |ULTIMATE.start_sll_circular_remove_last_~last~1#1.base|) (= .cse1 |ULTIMATE.start_sll_circular_remove_last_~snd_to_last~0#1.offset|) .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_sll_circular_remove_last_~last~1#1.offset| (select (select |#memory_$Pointer$#2.offset| |ULTIMATE.start_sll_circular_remove_last_~snd_to_last~0#1.base|) |ULTIMATE.start_sll_circular_remove_last_~snd_to_last~0#1.offset|)))) (and (= (_ bv0 32) (select (select |#memory_$Pointer$#1.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (bvslt |ULTIMATE.start_main_~i~0#1| (_ bv2 32)) .cse2 .cse3 .cse4 .cse5))) [2023-11-29 04:57:18,276 INFO L899 garLoopResultBuilder]: For program point L605-4(lines 605 607) no Hoare annotation was computed. [2023-11-29 04:57:18,276 INFO L899 garLoopResultBuilder]: For program point L597-1(lines 597 599) no Hoare annotation was computed. [2023-11-29 04:57:18,276 INFO L895 garLoopResultBuilder]: At program point L597-3(lines 597 599) the Hoare annotation is: (let ((.cse18 (select |#memory_$Pointer$#1.base| |ULTIMATE.start_main_~#s~0#1.base|))) (let ((.cse17 (select .cse18 (_ bv0 32)))) (let ((.cse15 (select |#memory_$Pointer$#1.offset| |ULTIMATE.start_main_~#s~0#1.base|)) (.cse16 (select (select |#memory_$Pointer$#2.base| .cse17) (_ bv0 32))) (.cse2 (select |#memory_$Pointer$#1.base| |ULTIMATE.start_sll_circular_remove_last_~head#1.base|))) (let ((.cse0 (select .cse18 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse1 (bvslt |ULTIMATE.start_main_~i~0#1| (_ bv2 32))) (.cse4 (= |ULTIMATE.start_main_~#s~0#1.offset| |ULTIMATE.start_sll_circular_remove_last_~head#1.offset|)) (.cse7 (= (select (select |#memory_$Pointer$#2.offset| .cse17) (_ bv0 32)) (_ bv0 32))) (.cse9 (select .cse2 (_ bv0 32))) (.cse8 (= |ULTIMATE.start_main_~#s~0#1.offset| (_ bv0 32))) (.cse10 (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32))) (.cse3 (= |ULTIMATE.start_sll_circular_remove_last_~last~1#1.offset| (_ bv0 32))) (.cse11 (= |ULTIMATE.start_sll_circular_remove_last_~head#1.offset| (_ bv0 32))) (.cse12 (= (select (select |#memory_$Pointer$#2.offset| .cse16) (_ bv0 32)) (_ bv0 32))) (.cse5 (= |ULTIMATE.start_main_~#s~0#1.base| |ULTIMATE.start_sll_circular_remove_last_~head#1.base|)) (.cse6 (= (_ bv2 32) |ULTIMATE.start_main_~len~0#1|)) (.cse13 (= (select (select |#memory_$Pointer$#2.base| .cse16) (_ bv0 32)) .cse17)) (.cse14 (= (select .cse15 (_ bv0 32)) (_ bv0 32)))) (or (and (= .cse0 (select (select |#memory_$Pointer$#2.base| .cse0) (_ bv0 32))) .cse1 (= (select .cse2 |ULTIMATE.start_sll_circular_remove_last_~head#1.offset|) |ULTIMATE.start_sll_circular_remove_last_~last~1#1.base|) .cse3 (= (select (select |#memory_$Pointer$#2.offset| .cse0) (_ bv0 32)) (_ bv0 32)) (= (select (select |#memory_$Pointer$#1.offset| |ULTIMATE.start_sll_circular_remove_last_~head#1.base|) |ULTIMATE.start_sll_circular_remove_last_~head#1.offset|) (_ bv0 32)) .cse4 .cse5 .cse6) (and .cse7 .cse8 (= (select (select |#memory_$Pointer$#2.base| .cse9) (_ bv0 32)) |ULTIMATE.start_sll_circular_remove_last_~last~1#1.base|) .cse10 .cse11 .cse12 (= |ULTIMATE.start_sll_circular_remove_last_~last~1#1.offset| (select (select |#memory_$Pointer$#2.offset| .cse9) (_ bv0 32))) .cse5 .cse6 .cse13 .cse14) (and (= (_ bv0 32) .cse0) .cse1 (= (select .cse15 |ULTIMATE.start_main_~#s~0#1.offset|) (_ bv0 32)) .cse4 .cse5 .cse6) (and .cse7 (= .cse9 |ULTIMATE.start_sll_circular_remove_last_~last~1#1.base|) .cse8 .cse10 .cse3 .cse11 .cse12 .cse5 .cse6 .cse13 .cse14)))))) [2023-11-29 04:57:18,276 INFO L899 garLoopResultBuilder]: For program point L597-4(lines 597 599) no Hoare annotation was computed. [2023-11-29 04:57:18,276 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 612 626) no Hoare annotation was computed. [2023-11-29 04:57:18,276 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 624) no Hoare annotation was computed. [2023-11-29 04:57:18,277 INFO L895 garLoopResultBuilder]: At program point L586-2(lines 586 591) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~#s~0#1.offset| (_ bv0 32))) (.cse2 (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| (_ bv0 32))) (.cse3 (= (_ bv0 32) |ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (.cse0 (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_~last~0#1.base|)) (.cse4 (= (_ bv2 32) |ULTIMATE.start_main_~len~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 (= (bvadd (select |#valid| |ULTIMATE.start_sll_circular_create_~head~0#1.base|) (_ bv1 1)) (_ bv0 1)) (= (_ bv2 32) |ULTIMATE.start_sll_circular_create_~len#1|) .cse4) (and .cse1 .cse2 .cse3 (= (select (select |#memory_$Pointer$#2.offset| |ULTIMATE.start_sll_circular_create_~head~0#1.base|) (_ bv0 32)) (_ bv0 32)) (= (select (select |#memory_$Pointer$#2.base| |ULTIMATE.start_sll_circular_create_~head~0#1.base|) (_ bv0 32)) |ULTIMATE.start_sll_circular_create_~last~0#1.base|) (not .cse0) .cse4 (= |ULTIMATE.start_sll_circular_create_~len#1| (_ bv1 32))))) [2023-11-29 04:57:18,277 INFO L899 garLoopResultBuilder]: For program point L586-3(lines 586 591) no Hoare annotation was computed. [2023-11-29 04:57:18,277 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 04:57:18,277 INFO L899 garLoopResultBuilder]: For program point L595(lines 595 611) no Hoare annotation was computed. [2023-11-29 04:57:18,277 INFO L899 garLoopResultBuilder]: For program point L620(lines 620 622) no Hoare annotation was computed. [2023-11-29 04:57:18,277 INFO L895 garLoopResultBuilder]: At program point L587(line 587) the Hoare annotation is: (and (= |ULTIMATE.start_sll_circular_create_~head~0#1.base| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) (= |ULTIMATE.start_main_~#s~0#1.offset| (_ bv0 32)) (= |ULTIMATE.start_sll_circular_create_~last~0#1.offset| (_ bv0 32)) (= (_ bv0 32) |ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (= (bvadd (select |#valid| |ULTIMATE.start_sll_circular_create_~head~0#1.base|) (_ bv1 1)) (_ bv0 1)) (= (_ bv2 32) |ULTIMATE.start_sll_circular_create_~len#1|) (= (_ bv2 32) |ULTIMATE.start_main_~len~0#1|)) [2023-11-29 04:57:18,277 INFO L899 garLoopResultBuilder]: For program point L587-1(line 587) no Hoare annotation was computed. [2023-11-29 04:57:18,277 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 04:57:18,277 INFO L899 garLoopResultBuilder]: For program point L600(lines 600 610) no Hoare annotation was computed. [2023-11-29 04:57:18,277 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 612 626) no Hoare annotation was computed. [2023-11-29 04:57:18,277 INFO L895 garLoopResultBuilder]: At program point L584(line 584) the Hoare annotation is: (and (= |ULTIMATE.start_main_~#s~0#1.offset| (_ bv0 32)) (= (_ bv2 32) |ULTIMATE.start_sll_circular_create_~len#1|) (= (_ bv2 32) |ULTIMATE.start_main_~len~0#1|)) [2023-11-29 04:57:18,277 INFO L899 garLoopResultBuilder]: For program point L584-1(line 584) no Hoare annotation was computed. [2023-11-29 04:57:18,277 INFO L895 garLoopResultBuilder]: At program point L617-3(lines 617 619) the Hoare annotation is: (let ((.cse3 (select |#memory_$Pointer$#1.offset| |ULTIMATE.start_main_~#s~0#1.base|)) (.cse4 (select |#memory_$Pointer$#1.base| |ULTIMATE.start_main_~#s~0#1.base|))) (let ((.cse5 (select .cse4 |ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (= (select .cse3 |ULTIMATE.start_main_~#s~0#1.offset|) (_ bv0 32))) (.cse2 (= (_ bv2 32) |ULTIMATE.start_main_~len~0#1|))) (or (let ((.cse0 (select .cse4 (_ bv0 32)))) (let ((.cse1 (select (select |#memory_$Pointer$#2.base| .cse0) (_ bv0 32)))) (and (= (select (select |#memory_$Pointer$#2.offset| .cse0) (_ bv0 32)) (_ bv0 32)) (= |ULTIMATE.start_main_~#s~0#1.offset| (_ bv0 32)) (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32)) (not (= .cse0 .cse1)) (= (select (select |#memory_$Pointer$#2.offset| .cse1) (_ bv0 32)) (_ bv0 32)) .cse2 (= (select (select |#memory_$Pointer$#2.base| .cse1) (_ bv0 32)) .cse0) (= (select .cse3 (_ bv0 32)) (_ bv0 32))))) (and (= |ULTIMATE.start_main_~i~0#1| (_ bv1 32)) (= .cse5 (select (select |#memory_$Pointer$#2.base| .cse5) (_ bv0 32))) (= (select (select |#memory_$Pointer$#2.offset| .cse5) (_ bv0 32)) (_ bv0 32)) .cse6 .cse2) (and (= (_ bv0 32) .cse5) .cse6 .cse2)))) [2023-11-29 04:57:18,278 INFO L899 garLoopResultBuilder]: For program point L617-4(lines 617 619) no Hoare annotation was computed. [2023-11-29 04:57:18,278 INFO L899 garLoopResultBuilder]: For program point L576(lines 576 578) no Hoare annotation was computed. [2023-11-29 04:57:18,278 INFO L899 garLoopResultBuilder]: For program point L572(line 572) no Hoare annotation was computed. [2023-11-29 04:57:18,278 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 574 582) the Hoare annotation is: (= |old(#valid)| |#valid|) [2023-11-29 04:57:18,278 INFO L899 garLoopResultBuilder]: For program point node_createEXIT(lines 574 582) no Hoare annotation was computed. [2023-11-29 04:57:18,280 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1] [2023-11-29 04:57:18,281 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:57:18,292 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset] could not be translated [2023-11-29 04:57:18,293 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset]][0bv32] could not be translated [2023-11-29 04:57:18,293 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~i~0 [2023-11-29 04:57:18,293 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~head!base][~head!offset] could not be translated [2023-11-29 04:57:18,295 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset]][0bv32] could not be translated [2023-11-29 04:57:18,295 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~head!base][~head!offset] could not be translated [2023-11-29 04:57:18,295 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,296 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~#s~0 [2023-11-29 04:57:18,296 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,296 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~len~0 [2023-11-29 04:57:18,296 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,296 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~head!base][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,296 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~i~0 [2023-11-29 04:57:18,296 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~head!base][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~#s~0 [2023-11-29 04:57:18,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~len~0 [2023-11-29 04:57:18,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][0bv32] could not be translated [2023-11-29 04:57:18,297 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][0bv32] could not be translated [2023-11-29 04:57:18,298 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset] could not be translated [2023-11-29 04:57:18,298 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~i~0 [2023-11-29 04:57:18,298 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][~#s~0!offset] could not be translated [2023-11-29 04:57:18,298 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,298 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~#s~0 [2023-11-29 04:57:18,298 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,298 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~len~0 [2023-11-29 04:57:18,299 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,299 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~head!base][0bv32] could not be translated [2023-11-29 04:57:18,299 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~i~0 [2023-11-29 04:57:18,299 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,299 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,299 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~#s~0 [2023-11-29 04:57:18,299 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,300 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~len~0 [2023-11-29 04:57:18,300 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,300 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][0bv32] could not be translated [2023-11-29 04:57:18,300 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][0bv32] could not be translated [2023-11-29 04:57:18,302 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[~head~0!base] could not be translated [2023-11-29 04:57:18,302 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[~head~0!base][0bv32] could not be translated [2023-11-29 04:57:18,302 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[~head~0!base][0bv32] could not be translated [2023-11-29 04:57:18,304 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,304 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][0bv32] could not be translated [2023-11-29 04:57:18,304 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,305 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,305 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated [2023-11-29 04:57:18,305 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][0bv32] could not be translated [2023-11-29 04:57:18,305 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][0bv32] could not be translated [2023-11-29 04:57:18,305 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset] could not be translated [2023-11-29 04:57:18,305 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset]][0bv32] could not be translated [2023-11-29 04:57:18,305 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset]][0bv32] could not be translated [2023-11-29 04:57:18,306 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][~#s~0!offset] could not be translated [2023-11-29 04:57:18,306 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset] could not be translated [2023-11-29 04:57:18,306 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][~#s~0!offset] could not be translated [2023-11-29 04:57:18,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~head!base][~head!offset] could not be translated [2023-11-29 04:57:18,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~i~0 [2023-11-29 04:57:18,308 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~head!base][~head!offset]][#memory_$Pointer$#1.offset[~head!base][~head!offset]] could not be translated [2023-11-29 04:57:18,308 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~head!base][~head!offset] could not be translated [2023-11-29 04:57:18,308 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][~#s~0!offset] could not be translated [2023-11-29 04:57:18,308 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,308 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~#s~0 [2023-11-29 04:57:18,308 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,308 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~len~0 [2023-11-29 04:57:18,309 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[~snd_to_last~0!base][~snd_to_last~0!offset] could not be translated [2023-11-29 04:57:18,309 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset] could not be translated [2023-11-29 04:57:18,309 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~i~0 [2023-11-29 04:57:18,309 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][~#s~0!offset] could not be translated [2023-11-29 04:57:18,309 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,309 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~#s~0 [2023-11-29 04:57:18,309 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-29 04:57:18,309 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~len~0 [2023-11-29 04:57:18,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:57:18 BoogieIcfgContainer [2023-11-29 04:57:18,310 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:57:18,310 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:57:18,310 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:57:18,311 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:57:18,311 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:56:04" (3/4) ... [2023-11-29 04:57:18,313 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:57:18,317 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure node_create [2023-11-29 04:57:18,321 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-29 04:57:18,322 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 04:57:18,322 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 04:57:18,322 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 04:57:18,398 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:57:18,399 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:57:18,399 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:57:18,399 INFO L158 Benchmark]: Toolchain (without parser) took 74504.08ms. Allocated memory was 69.2MB in the beginning and 408.9MB in the end (delta: 339.7MB). Free memory was 36.6MB in the beginning and 159.9MB in the end (delta: -123.2MB). Peak memory consumption was 215.8MB. Max. memory is 16.1GB. [2023-11-29 04:57:18,399 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory is still 46.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:57:18,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.70ms. Allocated memory was 69.2MB in the beginning and 111.1MB in the end (delta: 41.9MB). Free memory was 36.5MB in the beginning and 77.1MB in the end (delta: -40.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-11-29 04:57:18,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.53ms. Allocated memory is still 111.1MB. Free memory was 77.1MB in the beginning and 75.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:57:18,400 INFO L158 Benchmark]: Boogie Preprocessor took 61.98ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 71.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:57:18,400 INFO L158 Benchmark]: RCFGBuilder took 460.71ms. Allocated memory is still 111.1MB. Free memory was 71.3MB in the beginning and 78.2MB in the end (delta: -6.9MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2023-11-29 04:57:18,400 INFO L158 Benchmark]: TraceAbstraction took 73429.94ms. Allocated memory was 111.1MB in the beginning and 408.9MB in the end (delta: 297.8MB). Free memory was 77.6MB in the beginning and 165.1MB in the end (delta: -87.5MB). Peak memory consumption was 209.8MB. Max. memory is 16.1GB. [2023-11-29 04:57:18,401 INFO L158 Benchmark]: Witness Printer took 88.29ms. Allocated memory is still 408.9MB. Free memory was 165.1MB in the beginning and 159.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:57:18,402 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 69.2MB. Free memory is still 46.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.70ms. Allocated memory was 69.2MB in the beginning and 111.1MB in the end (delta: 41.9MB). Free memory was 36.5MB in the beginning and 77.1MB in the end (delta: -40.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.53ms. Allocated memory is still 111.1MB. Free memory was 77.1MB in the beginning and 75.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.98ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 71.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 460.71ms. Allocated memory is still 111.1MB. Free memory was 71.3MB in the beginning and 78.2MB in the end (delta: -6.9MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * TraceAbstraction took 73429.94ms. Allocated memory was 111.1MB in the beginning and 408.9MB in the end (delta: 297.8MB). Free memory was 77.6MB in the beginning and 165.1MB in the end (delta: -87.5MB). Peak memory consumption was 209.8MB. Max. memory is 16.1GB. * Witness Printer took 88.29ms. Allocated memory is still 408.9MB. Free memory was 165.1MB in the beginning and 159.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~i~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~head!base][~head!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~head!base][~head!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~#s~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~len~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~head!base][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~i~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~head!base][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~#s~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~len~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~i~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][~#s~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~#s~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~len~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~head!base][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~i~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~#s~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~len~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[~head~0!base] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[~head~0!base][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[~head~0!base][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][0bv32]][0bv32]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[#memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset]][0bv32] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][~#s~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][~#s~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~head!base][~head!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~i~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.base[#memory_$Pointer$#1.base[~head!base][~head!offset]][#memory_$Pointer$#1.offset[~head!base][~head!offset]] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~head!base][~head!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][~#s~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~#s~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~len~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#2.offset[~snd_to_last~0!base][~snd_to_last~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.base[~#s~0!base][~#s~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~i~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_$Pointer$#1.offset[~#s~0!base][~#s~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~#s~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~head!base has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~len~0 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 624]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.3s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 269 mSDsluCounter, 1129 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 914 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1231 IncrementalHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 215 mSDtfsCounter, 1231 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 748 GetRequests, 603 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=9, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 36 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 22 NumberOfFragments, 573 HoareAnnotationTreeSize, 9 FomulaSimplifications, 351 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 266 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 61.9s InterpolantComputationTime, 444 NumberOfCodeBlocks, 440 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 583 ConstructedInterpolants, 4 QuantifiedInterpolants, 5092 SizeOfPredicates, 110 NumberOfNonLiveVariables, 2562 ConjunctsInSsa, 277 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 361/411 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 597]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 586]: Loop Invariant Derived loop invariant: (((2 == len) && (2 == len)) || ((2 == len) && (len == 1))) - InvariantResult [Line: 617]: Loop Invariant Derived loop invariant: ((((i == 0) && (2 == len)) || ((i == 1) && (2 == len))) || (2 == len)) - InvariantResult [Line: 605]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-29 04:57:18,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2656b997-4609-4e41-b53b-7824e1980d57/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE