./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_append_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_append_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1 --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 208d04089fa2c50848123d29dd18b6b2021c1b591464bd422fd10955aaeec7fc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:18:16,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:18:16,872 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:18:16,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:18:16,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:18:16,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:18:16,897 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:18:16,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:18:16,898 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:18:16,898 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:18:16,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:18:16,898 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:18:16,898 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:18:16,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:18:16,899 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:18:16,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:18:16,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:18:16,899 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:18:16,899 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:18:16,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:18:16,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:18:16,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:18:16,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:18:16,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:18:16,900 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:18:16,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:18:16,900 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:18:16,900 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:18:16,900 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:18:16,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:18:16,900 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:18:16,900 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:18:16,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:18:16,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:18:16,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:18:16,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:18:16,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:18:16,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:18:16,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:18:16,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:18:16,901 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:18:16,901 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:18:16,901 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:18:16,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:18:16,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:18:16,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:18:16,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:18:16,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:18:16,902 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1 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 -> 208d04089fa2c50848123d29dd18b6b2021c1b591464bd422fd10955aaeec7fc [2024-12-02 08:18:17,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:18:17,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:18:17,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:18:17,114 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:18:17,114 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:18:17,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/list-simple/dll2c_append_equal.i [2024-12-02 08:18:19,773 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/data/fc9f36f90/9f5284c5d7574a30bae911c68341e3c5/FLAG2e2534b66 [2024-12-02 08:18:20,009 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:18:20,010 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/sv-benchmarks/c/list-simple/dll2c_append_equal.i [2024-12-02 08:18:20,021 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/data/fc9f36f90/9f5284c5d7574a30bae911c68341e3c5/FLAG2e2534b66 [2024-12-02 08:18:20,034 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/data/fc9f36f90/9f5284c5d7574a30bae911c68341e3c5 [2024-12-02 08:18:20,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:18:20,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:18:20,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:18:20,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:18:20,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:18:20,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aebc6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20, skipping insertion in model container [2024-12-02 08:18:20,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,066 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:18:20,308 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/sv-benchmarks/c/list-simple/dll2c_append_equal.i[24585,24598] [2024-12-02 08:18:20,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:18:20,321 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:18:20,360 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/sv-benchmarks/c/list-simple/dll2c_append_equal.i[24585,24598] [2024-12-02 08:18:20,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:18:20,381 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:18:20,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20 WrapperNode [2024-12-02 08:18:20,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:18:20,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:18:20,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:18:20,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:18:20,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,411 INFO L138 Inliner]: procedures = 127, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 134 [2024-12-02 08:18:20,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:18:20,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:18:20,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:18:20,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:18:20,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,423 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,442 INFO L175 MemorySlicer]: Split 29 memory accesses to 3 slices as follows [2, 18, 9]. 62 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 14 writes are split as follows [0, 13, 1]. [2024-12-02 08:18:20,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,450 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:18:20,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:18:20,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:18:20,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:18:20,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (1/1) ... [2024-12-02 08:18:20,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:18:20,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:18:20,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:18:20,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:18:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:18:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:18:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 08:18:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:18:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:18:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 08:18:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-12-02 08:18:20,511 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-12-02 08:18:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 08:18:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:18:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:18:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 08:18:20,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:18:20,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:18:20,621 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:18:20,622 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:18:20,807 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-12-02 08:18:20,807 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:18:20,815 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:18:20,815 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 08:18:20,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:18:20 BoogieIcfgContainer [2024-12-02 08:18:20,815 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:18:20,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:18:20,817 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:18:20,821 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:18:20,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:18:20" (1/3) ... [2024-12-02 08:18:20,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a72541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:18:20, skipping insertion in model container [2024-12-02 08:18:20,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:18:20" (2/3) ... [2024-12-02 08:18:20,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a72541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:18:20, skipping insertion in model container [2024-12-02 08:18:20,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:18:20" (3/3) ... [2024-12-02 08:18:20,823 INFO L128 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal.i [2024-12-02 08:18:20,838 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:18:20,839 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll2c_append_equal.i that has 2 procedures, 35 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-12-02 08:18:20,887 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:18:20,897 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2dc47a1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:18:20,897 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:18:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 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) [2024-12-02 08:18:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 08:18:20,906 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:18:20,907 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:18:20,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:18:20,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:18:20,911 INFO L85 PathProgramCache]: Analyzing trace with hash 976009434, now seen corresponding path program 1 times [2024-12-02 08:18:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:18:20,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113097797] [2024-12-02 08:18:20,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:18:20,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:18:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:18:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 08:18:21,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:18:21,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113097797] [2024-12-02 08:18:21,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113097797] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:18:21,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:18:21,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:18:21,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938501326] [2024-12-02 08:18:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:18:21,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:18:21,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:18:21,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:18:21,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:18:21,140 INFO L87 Difference]: Start difference. First operand has 35 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 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) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-12-02 08:18:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:18:21,152 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2024-12-02 08:18:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:18:21,154 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) Word has length 24 [2024-12-02 08:18:21,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:18:21,158 INFO L225 Difference]: With dead ends: 61 [2024-12-02 08:18:21,159 INFO L226 Difference]: Without dead ends: 26 [2024-12-02 08:18:21,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:18:21,164 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:18:21,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:18:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-12-02 08:18:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-12-02 08:18:21,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2024-12-02 08:18:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-12-02 08:18:21,196 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 24 [2024-12-02 08:18:21,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:18:21,197 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-12-02 08:18:21,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-12-02 08:18:21,197 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-12-02 08:18:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 08:18:21,198 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:18:21,198 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:18:21,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:18:21,199 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:18:21,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:18:21,199 INFO L85 PathProgramCache]: Analyzing trace with hash 65243983, now seen corresponding path program 1 times [2024-12-02 08:18:21,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:18:21,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231250720] [2024-12-02 08:18:21,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:18:21,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:18:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:18:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 08:18:21,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:18:21,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231250720] [2024-12-02 08:18:21,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231250720] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:18:21,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:18:21,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:18:21,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482750333] [2024-12-02 08:18:21,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:18:21,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:18:21,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:18:21,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:18:21,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:18:21,386 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-12-02 08:18:21,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:18:21,404 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2024-12-02 08:18:21,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:18:21,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) Word has length 24 [2024-12-02 08:18:21,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:18:21,406 INFO L225 Difference]: With dead ends: 48 [2024-12-02 08:18:21,406 INFO L226 Difference]: Without dead ends: 31 [2024-12-02 08:18:21,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:18:21,407 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:18:21,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 55 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:18:21,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-12-02 08:18:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2024-12-02 08:18:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2024-12-02 08:18:21,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-12-02 08:18:21,413 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 24 [2024-12-02 08:18:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:18:21,413 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-12-02 08:18:21,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-12-02 08:18:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-12-02 08:18:21,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-02 08:18:21,414 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:18:21,414 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:18:21,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:18:21,415 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:18:21,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:18:21,415 INFO L85 PathProgramCache]: Analyzing trace with hash 65017632, now seen corresponding path program 1 times [2024-12-02 08:18:21,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:18:21,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29743034] [2024-12-02 08:18:21,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:18:21,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:18:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:18:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 08:18:21,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:18:21,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29743034] [2024-12-02 08:18:21,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29743034] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:18:21,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430280792] [2024-12-02 08:18:21,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:18:21,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:18:21,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:18:21,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:18:21,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:18:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:18:22,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 08:18:22,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:18:22,171 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 16 treesize of output 8 [2024-12-02 08:18:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:18:22,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:18:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 08:18:22,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430280792] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:18:22,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:18:22,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 13 [2024-12-02 08:18:22,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338396989] [2024-12-02 08:18:22,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:18:22,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:18:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:18:22,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:18:22,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:18:22,266 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-12-02 08:18:26,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:18:30,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:18:34,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:18:38,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:18:42,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:18:46,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:18:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:18:46,574 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-12-02 08:18:46,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 08:18:46,574 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2024-12-02 08:18:46,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:18:46,575 INFO L225 Difference]: With dead ends: 57 [2024-12-02 08:18:46,575 INFO L226 Difference]: Without dead ends: 35 [2024-12-02 08:18:46,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:18:46,576 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:18:46,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 214 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 6 Unknown, 0 Unchecked, 24.2s Time] [2024-12-02 08:18:46,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-12-02 08:18:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-12-02 08:18:46,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 08:18:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2024-12-02 08:18:46,581 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 34 [2024-12-02 08:18:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:18:46,581 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2024-12-02 08:18:46,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 12 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-12-02 08:18:46,582 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2024-12-02 08:18:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-02 08:18:46,582 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:18:46,583 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:18:46,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:18:46,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:18:46,783 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:18:46,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:18:46,784 INFO L85 PathProgramCache]: Analyzing trace with hash 66864674, now seen corresponding path program 1 times [2024-12-02 08:18:46,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:18:46,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108927483] [2024-12-02 08:18:46,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:18:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:18:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:18:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:18:49,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:18:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108927483] [2024-12-02 08:18:49,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108927483] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:18:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47784482] [2024-12-02 08:18:49,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:18:49,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:18:49,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:18:49,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:18:49,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:18:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:18:50,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-12-02 08:18:50,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:18:50,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 08:18:50,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2024-12-02 08:18:50,602 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 [2024-12-02 08:18:50,725 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-12-02 08:18:50,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-12-02 08:18:50,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2024-12-02 08:18:50,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 08:18:50,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-12-02 08:18:50,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:18:51,184 INFO L349 Elim1Store]: treesize reduction 64, result has 9.9 percent of original size [2024-12-02 08:18:51,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 55 [2024-12-02 08:18:51,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:18:51,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2024-12-02 08:18:51,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-12-02 08:18:51,429 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 61 treesize of output 21 [2024-12-02 08:18:51,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-12-02 08:18:51,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-12-02 08:18:51,699 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-12-02 08:18:51,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-12-02 08:18:51,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:18:51,726 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 69 treesize of output 40 [2024-12-02 08:18:51,745 INFO L349 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2024-12-02 08:18:51,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2024-12-02 08:18:51,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 59 [2024-12-02 08:18:52,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:18:52,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:18:52,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 36 [2024-12-02 08:18:52,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2024-12-02 08:18:52,100 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 19 treesize of output 11 [2024-12-02 08:18:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:18:52,181 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:18:52,292 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_517 (Array Int Int)) (v_ArrVal_519 (Array Int Int)) (v_ArrVal_518 (Array Int Int))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (+ (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|) 4))) (let ((.cse0 (store (store |c_#memory_int#1| (select (select |c_#memory_$Pointer$#1.base| .cse1) .cse2) v_ArrVal_519) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_517))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_518) (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ 8 (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (not (= v_ArrVal_518 (store (select .cse0 .cse1) .cse2 (select v_ArrVal_518 .cse2)))))))) is different from false [2024-12-02 08:18:52,307 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_517 (Array Int Int)) (v_ArrVal_519 (Array Int Int)) (v_ArrVal_518 (Array Int Int))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (+ (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|) 4))) (let ((.cse0 (store (store |c_#memory_int#1| (select (select |c_#memory_$Pointer$#1.base| .cse1) .cse2) v_ArrVal_519) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_517))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_518) (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ 8 (select (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (not (= v_ArrVal_518 (store (select .cse0 .cse1) .cse2 (select v_ArrVal_518 .cse2)))))))) is different from false [2024-12-02 08:18:52,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47784482] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:18:52,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:18:52,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 44 [2024-12-02 08:18:52,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220794177] [2024-12-02 08:18:52,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:18:52,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 08:18:52,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:18:52,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 08:18:52,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2029, Unknown=2, NotChecked=182, Total=2352 [2024-12-02 08:18:52,472 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 44 states, 40 states have (on average 1.3) internal successors, (52), 35 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-02 08:18:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:18:54,261 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2024-12-02 08:18:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 08:18:54,262 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 40 states have (on average 1.3) internal successors, (52), 35 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 34 [2024-12-02 08:18:54,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:18:54,263 INFO L225 Difference]: With dead ends: 85 [2024-12-02 08:18:54,263 INFO L226 Difference]: Without dead ends: 58 [2024-12-02 08:18:54,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=268, Invalid=3644, Unknown=2, NotChecked=246, Total=4160 [2024-12-02 08:18:54,266 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:18:54,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 315 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 08:18:54,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-12-02 08:18:54,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2024-12-02 08:18:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 08:18:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-12-02 08:18:54,275 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 34 [2024-12-02 08:18:54,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:18:54,276 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-12-02 08:18:54,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 40 states have (on average 1.3) internal successors, (52), 35 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-02 08:18:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-12-02 08:18:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 08:18:54,277 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:18:54,277 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:18:54,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:18:54,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:18:54,477 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:18:54,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:18:54,478 INFO L85 PathProgramCache]: Analyzing trace with hash -167527015, now seen corresponding path program 1 times [2024-12-02 08:18:54,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:18:54,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841493802] [2024-12-02 08:18:54,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:18:54,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:18:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:18:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:18:56,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:18:56,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841493802] [2024-12-02 08:18:56,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841493802] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:18:56,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227034598] [2024-12-02 08:18:56,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:18:56,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:18:56,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:18:56,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:18:56,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:18:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:18:56,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-12-02 08:18:56,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:18:56,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-02 08:18:56,337 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-12-02 08:18:56,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-12-02 08:18:56,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:18:56,445 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-02 08:18:56,445 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 41 treesize of output 38 [2024-12-02 08:18:56,537 INFO L349 Elim1Store]: treesize reduction 68, result has 9.3 percent of original size [2024-12-02 08:18:56,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 29 [2024-12-02 08:18:56,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:18:56,635 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 67 treesize of output 17 [2024-12-02 08:18:56,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-12-02 08:18:56,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:18:56,680 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 75 treesize of output 52 [2024-12-02 08:18:56,691 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2024-12-02 08:18:56,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-12-02 08:18:56,874 INFO L349 Elim1Store]: treesize reduction 188, result has 51.8 percent of original size [2024-12-02 08:18:56,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 281 treesize of output 342 [2024-12-02 08:18:56,883 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 179 treesize of output 123 [2024-12-02 08:18:56,978 INFO L349 Elim1Store]: treesize reduction 419, result has 27.9 percent of original size [2024-12-02 08:18:56,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 275 treesize of output 429 [2024-12-02 08:18:57,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-12-02 08:18:57,635 INFO L349 Elim1Store]: treesize reduction 36, result has 50.0 percent of original size [2024-12-02 08:18:57,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 392 treesize of output 376 [2024-12-02 08:18:57,913 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 08:18:58,005 INFO L349 Elim1Store]: treesize reduction 150, result has 46.0 percent of original size [2024-12-02 08:18:58,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 344 treesize of output 333 [2024-12-02 08:18:58,529 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 08:18:58,594 INFO L349 Elim1Store]: treesize reduction 92, result has 49.7 percent of original size [2024-12-02 08:18:58,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 942 treesize of output 860 [2024-12-02 08:18:58,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-12-02 08:19:01,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:19:01,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 2794 treesize of output 3106 [2024-12-02 08:27:04,746 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 08:27:04,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-02 08:27:04,747 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-12-02 08:27:04,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:27:04,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:04,948 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_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/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.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:584) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$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:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) 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:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) 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 [2024-12-02 08:27:04,954 INFO L158 Benchmark]: Toolchain (without parser) took 524918.10ms. Allocated memory was 142.6MB in the beginning and 629.1MB in the end (delta: 486.5MB). Free memory was 117.0MB in the beginning and 269.2MB in the end (delta: -152.2MB). Peak memory consumption was 395.5MB. Max. memory is 16.1GB. [2024-12-02 08:27:04,955 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:27:04,955 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.71ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 98.8MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 08:27:04,955 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.94ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 97.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:27:04,955 INFO L158 Benchmark]: Boogie Preprocessor took 47.38ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 94.1MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 08:27:04,955 INFO L158 Benchmark]: RCFGBuilder took 355.89ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 76.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 08:27:04,956 INFO L158 Benchmark]: TraceAbstraction took 524136.84ms. Allocated memory was 142.6MB in the beginning and 629.1MB in the end (delta: 486.5MB). Free memory was 76.3MB in the beginning and 269.2MB in the end (delta: -192.9MB). Peak memory consumption was 353.6MB. Max. memory is 16.1GB. [2024-12-02 08:27:04,957 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.71ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 98.8MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.94ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 97.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.38ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 94.1MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 355.89ms. Allocated memory is still 142.6MB. Free memory was 94.1MB in the beginning and 76.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 524136.84ms. Allocated memory was 142.6MB in the beginning and 629.1MB in the end (delta: 486.5MB). Free memory was 76.3MB in the beginning and 269.2MB in the end (delta: -192.9MB). Peak memory consumption was 353.6MB. 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_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/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_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_append_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1 --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 208d04089fa2c50848123d29dd18b6b2021c1b591464bd422fd10955aaeec7fc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:27:06,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:27:06,732 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 08:27:06,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:27:06,737 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:27:06,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:27:06,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:27:06,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:27:06,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:27:06,759 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:27:06,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:27:06,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:27:06,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:27:06,760 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:27:06,760 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:27:06,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:27:06,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:27:06,761 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:27:06,762 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:27:06,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:27:06,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:27:06,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:27:06,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:27:06,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:27:06,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:27:06,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:27:06,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:27:06,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:27:06,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:27:06,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:27:06,763 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:27:06,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:27:06,763 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 08:27:06,763 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 08:27:06,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:27:06,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:27:06,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:27:06,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:27:06,763 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1 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 -> 208d04089fa2c50848123d29dd18b6b2021c1b591464bd422fd10955aaeec7fc [2024-12-02 08:27:06,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:27:06,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:27:06,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:27:06,995 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:27:06,995 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:27:06,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/list-simple/dll2c_append_equal.i [2024-12-02 08:27:09,696 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/data/02fffb44e/4aeddc434a9748f186c5fedfd5a6d1b4/FLAG5af8bd0b3 [2024-12-02 08:27:09,907 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:27:09,908 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/sv-benchmarks/c/list-simple/dll2c_append_equal.i [2024-12-02 08:27:09,918 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/data/02fffb44e/4aeddc434a9748f186c5fedfd5a6d1b4/FLAG5af8bd0b3 [2024-12-02 08:27:09,931 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/data/02fffb44e/4aeddc434a9748f186c5fedfd5a6d1b4 [2024-12-02 08:27:09,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:27:09,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:27:09,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:27:09,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:27:09,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:27:09,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:27:09" (1/1) ... [2024-12-02 08:27:09,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33536568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:09, skipping insertion in model container [2024-12-02 08:27:09,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:27:09" (1/1) ... [2024-12-02 08:27:09,966 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:27:10,204 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/sv-benchmarks/c/list-simple/dll2c_append_equal.i[24585,24598] [2024-12-02 08:27:10,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:27:10,217 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:27:10,258 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/sv-benchmarks/c/list-simple/dll2c_append_equal.i[24585,24598] [2024-12-02 08:27:10,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:27:10,286 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:27:10,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10 WrapperNode [2024-12-02 08:27:10,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:27:10,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:27:10,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:27:10,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:27:10,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,325 INFO L138 Inliner]: procedures = 130, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 135 [2024-12-02 08:27:10,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:27:10,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:27:10,326 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:27:10,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:27:10,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,338 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,355 INFO L175 MemorySlicer]: Split 29 memory accesses to 3 slices as follows [2, 9, 18]. 62 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 14 writes are split as follows [0, 1, 13]. [2024-12-02 08:27:10,355 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,366 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,370 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:27:10,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:27:10,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:27:10,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:27:10,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (1/1) ... [2024-12-02 08:27:10,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:27:10,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:27:10,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:27:10,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:27:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-12-02 08:27:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-12-02 08:27:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-12-02 08:27:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-12-02 08:27:10,431 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:27:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-12-02 08:27:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-12-02 08:27:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-12-02 08:27:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 08:27:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 08:27:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 08:27:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 08:27:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-12-02 08:27:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-12-02 08:27:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:27:10,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:27:10,548 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:27:10,549 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:27:10,914 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-12-02 08:27:10,915 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:27:10,923 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:27:10,924 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 08:27:10,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:27:10 BoogieIcfgContainer [2024-12-02 08:27:10,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:27:10,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:27:10,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:27:10,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:27:10,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:27:09" (1/3) ... [2024-12-02 08:27:10,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d171de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:27:10, skipping insertion in model container [2024-12-02 08:27:10,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:27:10" (2/3) ... [2024-12-02 08:27:10,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d171de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:27:10, skipping insertion in model container [2024-12-02 08:27:10,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:27:10" (3/3) ... [2024-12-02 08:27:10,932 INFO L128 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal.i [2024-12-02 08:27:10,942 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:27:10,943 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll2c_append_equal.i that has 2 procedures, 35 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-12-02 08:27:10,980 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:27:10,988 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d415377, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:27:10,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:27:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 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) [2024-12-02 08:27:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 08:27:10,996 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:27:10,997 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:27:10,997 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:27:11,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:27:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash 976009434, now seen corresponding path program 1 times [2024-12-02 08:27:11,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:27:11,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825962168] [2024-12-02 08:27:11,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:11,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:11,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:27:11,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:27:11,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:27:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:11,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:27:11,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:27:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:11,207 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:27:11,207 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:27:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825962168] [2024-12-02 08:27:11,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825962168] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:27:11,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:27:11,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:27:11,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225229031] [2024-12-02 08:27:11,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:27:11,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:27:11,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:27:11,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:27:11,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:27:11,226 INFO L87 Difference]: Start difference. First operand has 35 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 30 states have internal predecessors, (42), 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) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:27:11,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:27:11,239 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2024-12-02 08:27:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:27:11,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-12-02 08:27:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:27:11,244 INFO L225 Difference]: With dead ends: 61 [2024-12-02 08:27:11,244 INFO L226 Difference]: Without dead ends: 26 [2024-12-02 08:27:11,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:27:11,247 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:27:11,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:27:11,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-12-02 08:27:11,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-12-02 08:27:11,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2024-12-02 08:27:11,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2024-12-02 08:27:11,274 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 24 [2024-12-02 08:27:11,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:27:11,274 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2024-12-02 08:27:11,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:27:11,275 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2024-12-02 08:27:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 08:27:11,276 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:27:11,276 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:27:11,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:27:11,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:11,477 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:27:11,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:27:11,477 INFO L85 PathProgramCache]: Analyzing trace with hash 65243983, now seen corresponding path program 1 times [2024-12-02 08:27:11,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:27:11,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318061835] [2024-12-02 08:27:11,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:11,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:11,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:27:11,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:27:11,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:27:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:11,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 08:27:11,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:27:11,847 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 16 treesize of output 8 [2024-12-02 08:27:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:11,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:27:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:27:11,944 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:27:11,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318061835] [2024-12-02 08:27:11,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318061835] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:27:11,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:27:11,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2024-12-02 08:27:11,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079909698] [2024-12-02 08:27:11,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:27:11,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:27:11,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:27:11,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:27:11,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:27:11,947 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:27:15,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:20,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:24,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:27:25,204 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2024-12-02 08:27:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 08:27:25,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-12-02 08:27:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:27:25,205 INFO L225 Difference]: With dead ends: 69 [2024-12-02 08:27:25,205 INFO L226 Difference]: Without dead ends: 47 [2024-12-02 08:27:25,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:27:25,206 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:27:25,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 173 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 3 Unknown, 0 Unchecked, 13.2s Time] [2024-12-02 08:27:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-12-02 08:27:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-12-02 08:27:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 08:27:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-12-02 08:27:25,213 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 24 [2024-12-02 08:27:25,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:27:25,213 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-12-02 08:27:25,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:27:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-12-02 08:27:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 08:27:25,214 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:27:25,214 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:27:25,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:27:25,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:25,415 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:27:25,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:27:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash 67091025, now seen corresponding path program 1 times [2024-12-02 08:27:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:27:25,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945324607] [2024-12-02 08:27:25,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:25,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:25,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:27:25,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:27:25,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:27:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:25,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 08:27:25,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:27:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:25,577 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:27:25,577 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:27:25,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945324607] [2024-12-02 08:27:25,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945324607] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:27:25,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:27:25,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:27:25,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995731239] [2024-12-02 08:27:25,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:27:25,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:27:25,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:27:25,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:27:25,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:27:25,579 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:27:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:27:25,598 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2024-12-02 08:27:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:27:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-12-02 08:27:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:27:25,599 INFO L225 Difference]: With dead ends: 48 [2024-12-02 08:27:25,599 INFO L226 Difference]: Without dead ends: 31 [2024-12-02 08:27:25,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:27:25,600 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:27:25,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:27:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-12-02 08:27:25,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-12-02 08:27:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 08:27:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-12-02 08:27:25,605 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 24 [2024-12-02 08:27:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:27:25,606 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-12-02 08:27:25,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 08:27:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-12-02 08:27:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-02 08:27:25,606 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:27:25,607 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:27:25,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:27:25,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:25,807 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:27:25,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:27:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 65017632, now seen corresponding path program 1 times [2024-12-02 08:27:25,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:27:25,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776124173] [2024-12-02 08:27:25,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:25,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:25,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:27:25,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:27:25,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:27:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:25,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 08:27:25,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:27:26,200 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 16 treesize of output 8 [2024-12-02 08:27:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 08:27:26,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:27:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 08:27:26,317 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:27:26,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776124173] [2024-12-02 08:27:26,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776124173] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:27:26,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:27:26,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11 [2024-12-02 08:27:26,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519149252] [2024-12-02 08:27:26,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:27:26,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:27:26,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:27:26,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:27:26,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:27:26,319 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 08:27:30,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:34,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:40,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 08:27:40,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:27:40,791 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-12-02 08:27:40,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 08:27:40,792 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-12-02 08:27:40,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:27:40,792 INFO L225 Difference]: With dead ends: 57 [2024-12-02 08:27:40,792 INFO L226 Difference]: Without dead ends: 35 [2024-12-02 08:27:40,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:27:40,793 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:27:40,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 206 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 3 Unknown, 0 Unchecked, 14.4s Time] [2024-12-02 08:27:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-12-02 08:27:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-12-02 08:27:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 08:27:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-12-02 08:27:40,797 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 34 [2024-12-02 08:27:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:27:40,797 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-12-02 08:27:40,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 08:27:40,797 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-12-02 08:27:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-02 08:27:40,798 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:27:40,798 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:27:40,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:27:40,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:40,999 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:27:40,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:27:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash 66864674, now seen corresponding path program 1 times [2024-12-02 08:27:40,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:27:40,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275651493] [2024-12-02 08:27:41,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:41,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:41,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:27:41,001 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:27:41,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:27:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:41,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 08:27:41,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:27:41,183 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 [2024-12-02 08:27:41,375 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 [2024-12-02 08:27:41,488 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:27:41,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:27:41,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 08:27:41,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:27:41,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:27:41,850 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 22 treesize of output 22 [2024-12-02 08:27:41,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-12-02 08:27:41,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:27:41,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2024-12-02 08:27:41,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-12-02 08:27:42,102 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 32 treesize of output 16 [2024-12-02 08:27:42,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-02 08:27:42,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:27:42,411 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 40 treesize of output 29 [2024-12-02 08:27:42,446 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-12-02 08:27:42,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-12-02 08:27:42,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-12-02 08:27:42,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 52 [2024-12-02 08:27:42,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:27:42,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:27:42,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 36 [2024-12-02 08:27:42,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2024-12-02 08:27:42,880 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 19 treesize of output 11 [2024-12-02 08:27:42,956 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 [2024-12-02 08:27:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:43,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:27:43,144 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_396 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_397 (_ BitVec 32))) (= (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (store |c_#memory_int#2| (select (select |c_#memory_$Pointer$#2.base| .cse1) .cse2) v_ArrVal_393) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_396))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_ArrVal_397)))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|)) is different from false [2024-12-02 08:27:43,165 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_396 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_397 (_ BitVec 32))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (store |c_#memory_int#2| (select (select |c_#memory_$Pointer$#2.base| .cse1) .cse2) v_ArrVal_393) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_396))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_ArrVal_397)))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2024-12-02 08:27:43,280 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_396 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_393 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_18| (_ BitVec 32)) (v_ArrVal_397 (_ BitVec 32)) (v_ArrVal_405 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (store |c_#memory_int#2| (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_18| v_ArrVal_405) .cse1) .cse2) v_ArrVal_393) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_18| v_ArrVal_396))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_ArrVal_397)))) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) |c_ULTIMATE.start_main_~data~0#1|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_18|))))) is different from false [2024-12-02 08:27:43,285 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:27:43,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275651493] [2024-12-02 08:27:43,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275651493] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:27:43,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1946745257] [2024-12-02 08:27:43,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:43,285 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:27:43,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:27:43,287 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:27:43,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-12-02 08:27:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:43,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-12-02 08:27:43,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:27:43,806 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 [2024-12-02 08:27:44,175 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 [2024-12-02 08:27:44,247 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:27:44,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:27:44,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 08:27:44,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:27:44,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:27:44,798 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 14 treesize of output 14 [2024-12-02 08:27:44,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:27:44,806 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 26 treesize of output 23 [2024-12-02 08:27:44,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-12-02 08:27:44,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-12-02 08:27:45,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-02 08:27:45,126 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 11 treesize of output 3 [2024-12-02 08:27:45,130 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 11 treesize of output 3 [2024-12-02 08:27:45,540 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-12-02 08:27:45,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2024-12-02 08:27:45,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-12-02 08:27:45,576 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 [2024-12-02 08:27:45,883 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 11 treesize of output 3 [2024-12-02 08:27:45,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 50 [2024-12-02 08:27:45,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:27:46,045 INFO L349 Elim1Store]: treesize reduction 84, result has 34.9 percent of original size [2024-12-02 08:27:46,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 100 treesize of output 158 [2024-12-02 08:27:46,073 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-02 08:27:46,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15 [2024-12-02 08:27:46,237 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-12-02 08:27:46,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 66 [2024-12-02 08:27:46,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 209 [2024-12-02 08:27:46,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-12-02 08:27:46,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-12-02 08:27:46,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-12-02 08:27:46,802 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 19 treesize of output 11 [2024-12-02 08:27:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:46,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:27:46,951 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 145 treesize of output 103 [2024-12-02 08:27:46,991 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_521 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_54 (_ BitVec 32)) (v_ArrVal_517 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_519 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store (store |c_#memory_int#2| v_arrayElimCell_54 v_ArrVal_521) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_517)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (or (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse0 .cse1 v_ArrVal_519) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (not (= (store (select .cse0 .cse1) .cse2 (select v_ArrVal_519 .cse2)) v_ArrVal_519)) (not (= v_ArrVal_521 (let ((.cse3 (select (select |c_#memory_$Pointer$#2.offset| .cse1) .cse2))) (store (select |c_#memory_int#2| v_arrayElimCell_54) .cse3 (select v_ArrVal_521 .cse3)))))))) is different from false [2024-12-02 08:27:47,982 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_521 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_54 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_22| (_ BitVec 32)) (v_ArrVal_517 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_528 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_529 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_519 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (.cse3 (store (store |c_#memory_int#2| v_arrayElimCell_54 v_ArrVal_521) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_22| v_ArrVal_517)) (.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_22|))) (not (= v_ArrVal_521 (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_22| v_ArrVal_528) .cse1) .cse2))) (store (select (store |c_#memory_int#2| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_22| v_ArrVal_529) v_arrayElimCell_54) .cse0 (select v_ArrVal_521 .cse0))))) (not (= v_ArrVal_519 (store (select .cse3 .cse1) .cse2 (select v_ArrVal_519 .cse2)))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store .cse3 .cse1 v_ArrVal_519) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (bvadd (_ bv8 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false [2024-12-02 08:27:47,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1946745257] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:27:47,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:27:47,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 43 [2024-12-02 08:27:47,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320589910] [2024-12-02 08:27:47,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:27:47,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 08:27:47,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:27:47,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 08:27:48,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1903, Unknown=41, NotChecked=460, Total=2550 [2024-12-02 08:27:48,000 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 43 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 34 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-02 08:27:58,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:27:58,316 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2024-12-02 08:27:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 08:27:58,316 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 34 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 34 [2024-12-02 08:27:58,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:27:58,318 INFO L225 Difference]: With dead ends: 59 [2024-12-02 08:27:58,318 INFO L226 Difference]: Without dead ends: 57 [2024-12-02 08:27:58,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=249, Invalid=3144, Unknown=49, NotChecked=590, Total=4032 [2024-12-02 08:27:58,319 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:27:58,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 320 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-12-02 08:27:58,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-12-02 08:27:58,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2024-12-02 08:27:58,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 08:27:58,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-12-02 08:27:58,326 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 34 [2024-12-02 08:27:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:27:58,326 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-12-02 08:27:58,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 34 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-02 08:27:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-12-02 08:27:58,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 08:27:58,328 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:27:58,328 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:27:58,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 08:27:58,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-12-02 08:27:58,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 08:27:58,728 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:27:58,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:27:58,729 INFO L85 PathProgramCache]: Analyzing trace with hash -167527015, now seen corresponding path program 1 times [2024-12-02 08:27:58,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:27:58,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878337424] [2024-12-02 08:27:58,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:58,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:58,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:27:58,731 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:27:58,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:27:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:58,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 08:27:58,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:27:58,883 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 [2024-12-02 08:27:59,067 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:27:59,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:27:59,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:27:59,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:27:59,339 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-12-02 08:27:59,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 88 [2024-12-02 08:27:59,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 60 [2024-12-02 08:27:59,546 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 08:27:59,546 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 121 treesize of output 64 [2024-12-02 08:27:59,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2024-12-02 08:27:59,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-12-02 08:27:59,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:27:59,785 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-12-02 08:27:59,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 78 [2024-12-02 08:27:59,820 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-12-02 08:27:59,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-12-02 08:28:00,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:00,166 INFO L349 Elim1Store]: treesize reduction 106, result has 9.4 percent of original size [2024-12-02 08:28:00,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 158 treesize of output 147 [2024-12-02 08:28:00,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 125 [2024-12-02 08:28:00,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 43 [2024-12-02 08:28:00,268 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 08:28:00,268 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 15 treesize of output 7 [2024-12-02 08:28:00,354 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 35 treesize of output 19 [2024-12-02 08:28:00,356 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 16 treesize of output 8 [2024-12-02 08:28:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:28:00,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:28:00,548 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_635 (_ BitVec 32)) (v_ArrVal_633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse0 (select (select (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse3 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse1 (store (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| .cse2) .cse3) v_ArrVal_634) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_633))) (store .cse1 .cse2 (store (select .cse1 .cse2) .cse3 v_ArrVal_635)))) .cse0) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false [2024-12-02 08:28:00,566 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_635 (_ BitVec 32)) (v_ArrVal_633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse3 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| .cse1) .cse2) v_ArrVal_634) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_633))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_ArrVal_635)))) .cse3) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) .cse3)))) is different from false [2024-12-02 08:28:00,621 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_26| (_ BitVec 32)) (v_ArrVal_635 (_ BitVec 32)) (v_ArrVal_639 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (let ((.cse3 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_26| v_ArrVal_639) .cse1) .cse2) v_ArrVal_634) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_26| v_ArrVal_633))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_ArrVal_635)))) .cse3) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) .cse3))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_26|))))) is different from false [2024-12-02 08:28:00,625 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:28:00,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878337424] [2024-12-02 08:28:00,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878337424] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:28:00,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1900527178] [2024-12-02 08:28:00,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:00,625 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:28:00,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:28:00,626 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:28:00,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-12-02 08:28:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:01,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-12-02 08:28:01,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:28:01,141 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 [2024-12-02 08:28:01,474 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:28:01,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:28:01,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:28:01,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:28:02,004 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-12-02 08:28:02,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 109 [2024-12-02 08:28:02,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:02,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-12-02 08:28:02,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-12-02 08:28:02,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 64 [2024-12-02 08:28:06,449 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 08:28:06,449 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 172 treesize of output 97 [2024-12-02 08:28:06,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-12-02 08:28:06,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-02 08:28:06,469 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 11 treesize of output 3 [2024-12-02 08:28:06,871 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-12-02 08:28:06,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-12-02 08:28:06,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:06,907 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-12-02 08:28:06,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 180 treesize of output 111 [2024-12-02 08:28:06,952 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-12-02 08:28:06,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-12-02 08:28:07,391 INFO L349 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2024-12-02 08:28:07,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 113 [2024-12-02 08:28:07,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:07,424 INFO L349 Elim1Store]: treesize reduction 82, result has 5.7 percent of original size [2024-12-02 08:28:07,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 117 treesize of output 88 [2024-12-02 08:28:07,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 50 [2024-12-02 08:28:07,464 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 11 treesize of output 3 [2024-12-02 08:28:07,671 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 08:28:07,671 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 15 treesize of output 7 [2024-12-02 08:28:07,870 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 78 treesize of output 46 [2024-12-02 08:28:07,884 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-02 08:28:07,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 22 [2024-12-02 08:28:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:28:07,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:28:07,934 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_748 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| .cse1) .cse2))) (store |c_#memory_$Pointer$#2.base| .cse3 (store (select |c_#memory_$Pointer$#2.base| .cse3) (select (select |c_#memory_$Pointer$#2.offset| .cse1) .cse2) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|))) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_748))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|)))) .cse4) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) .cse4)))) is different from false [2024-12-02 08:28:07,965 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_748 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (let ((.cse3 (select (select |c_#memory_$Pointer$#2.base| .cse1) .cse2))) (store |c_#memory_$Pointer$#2.base| .cse3 (store (select |c_#memory_$Pointer$#2.base| .cse3) (select (select |c_#memory_$Pointer$#2.offset| .cse1) .cse2) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|))) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_748))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|)))) .cse4) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) .cse4)))) is different from false [2024-12-02 08:28:08,086 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_748 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_30| (_ BitVec 32)) (v_ArrVal_756 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_757 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_30|))) (not (let ((.cse5 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse2 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (store (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_30| v_ArrVal_756))) (let ((.cse3 (select (select .cse4 .cse1) .cse2))) (store |c_#memory_$Pointer$#2.base| .cse3 (store (select .cse4 .cse3) (select (select (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_30| v_ArrVal_757) .cse1) .cse2) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_30|)))) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_30| v_ArrVal_748))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_30|)))) .cse5) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) .cse5))))) is different from false [2024-12-02 08:28:08,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1900527178] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:28:08,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:28:08,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 41 [2024-12-02 08:28:08,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106217297] [2024-12-02 08:28:08,095 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:28:08,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 08:28:08,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:28:08,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 08:28:08,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1669, Unknown=8, NotChecked=522, Total=2352 [2024-12-02 08:28:08,097 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 41 states, 38 states have (on average 1.368421052631579) internal successors, (52), 32 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-02 08:28:16,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:28:16,191 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2024-12-02 08:28:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 08:28:16,192 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 1.368421052631579) internal successors, (52), 32 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2024-12-02 08:28:16,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:28:16,193 INFO L225 Difference]: With dead ends: 61 [2024-12-02 08:28:16,193 INFO L226 Difference]: Without dead ends: 58 [2024-12-02 08:28:16,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=195, Invalid=2171, Unknown=10, NotChecked=594, Total=2970 [2024-12-02 08:28:16,194 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 51 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:28:16,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 238 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 542 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2024-12-02 08:28:16,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-12-02 08:28:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2024-12-02 08:28:16,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 states have internal predecessors, (46), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 08:28:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2024-12-02 08:28:16,204 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 36 [2024-12-02 08:28:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:28:16,204 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2024-12-02 08:28:16,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 1.368421052631579) internal successors, (52), 32 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-02 08:28:16,204 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2024-12-02 08:28:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 08:28:16,205 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:28:16,205 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:28:16,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 08:28:16,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-12-02 08:28:16,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 08:28:16,606 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:28:16,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:28:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash -898447214, now seen corresponding path program 1 times [2024-12-02 08:28:16,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:28:16,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44530942] [2024-12-02 08:28:16,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:16,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:28:16,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:28:16,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:28:16,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:28:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:16,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-12-02 08:28:16,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:28:16,785 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 [2024-12-02 08:28:16,835 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 [2024-12-02 08:28:17,244 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:28:17,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:28:17,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:28:17,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:28:17,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:28:17,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:28:17,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 08:28:17,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:28:17,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:28:18,011 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-12-02 08:28:18,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 143 treesize of output 139 [2024-12-02 08:28:18,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:18,027 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 24 treesize of output 21 [2024-12-02 08:28:18,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-12-02 08:28:18,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 82 [2024-12-02 08:28:18,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2024-12-02 08:28:18,098 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 [2024-12-02 08:28:18,521 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 08:28:18,521 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 121 treesize of output 64 [2024-12-02 08:28:18,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-12-02 08:28:18,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-12-02 08:28:18,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-02 08:28:18,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:18,969 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-12-02 08:28:18,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 87 [2024-12-02 08:28:19,023 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2024-12-02 08:28:19,023 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 1 case distinctions, treesize of input 24 treesize of output 31 [2024-12-02 08:28:19,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-12-02 08:28:19,104 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-12-02 08:28:19,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-12-02 08:28:19,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 20 [2024-12-02 08:28:19,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:20,540 INFO L349 Elim1Store]: treesize reduction 106, result has 9.4 percent of original size [2024-12-02 08:28:20,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 477 treesize of output 394 [2024-12-02 08:28:20,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 384 treesize of output 348 [2024-12-02 08:28:20,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 288 treesize of output 41 [2024-12-02 08:28:20,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2024-12-02 08:28:20,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2024-12-02 08:28:20,938 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 08:28:20,938 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 15 treesize of output 7 [2024-12-02 08:28:21,276 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 211 treesize of output 135 [2024-12-02 08:28:21,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:21,289 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-12-02 08:28:21,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 277 treesize of output 186 [2024-12-02 08:28:21,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2024-12-02 08:28:21,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-12-02 08:28:21,409 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 [2024-12-02 08:28:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:28:21,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:28:22,027 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_882 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_883 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_884 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_881 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_880 (_ BitVec 32)) (v_ArrVal_891 (_ BitVec 32)) (v_ArrVal_890 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse4 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| .cse2) .cse4)) (.cse1 (select (select |c_#memory_$Pointer$#2.offset| .cse2) .cse4))) (or (not (= v_ArrVal_885 (store (select |c_#memory_int#2| .cse0) .cse1 (select v_ArrVal_885 .cse1)))) (= (let ((.cse5 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_int#2| .cse0 v_ArrVal_885) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_881) .cse2 v_ArrVal_884) (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_882) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_883))) (store .cse3 .cse2 (store (select .cse3 .cse2) .cse4 v_ArrVal_890))) .cse5) .cse6)) (bvadd (_ bv8 32) (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$#2.offset| .cse0 (store (select |c_#memory_$Pointer$#2.offset| .cse0) .cse1 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)))) (store .cse8 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| (store (store (select .cse8 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) v_ArrVal_880) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_891))))) (store .cse7 .cse2 (store (select .cse7 .cse2) .cse4 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse5) .cse6)))) |c_ULTIMATE.start_main_~data~0#1|))))) is different from false [2024-12-02 08:28:22,248 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_882 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_883 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_884 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_885 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_881 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_880 (_ BitVec 32)) (v_ArrVal_891 (_ BitVec 32)) (v_ArrVal_890 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse4 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| .cse2) .cse4)) (.cse1 (select (select |c_#memory_$Pointer$#2.offset| .cse2) .cse4))) (or (not (= v_ArrVal_885 (store (select |c_#memory_int#2| .cse0) .cse1 (select v_ArrVal_885 .cse1)))) (= (let ((.cse5 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_int#2| .cse0 v_ArrVal_885) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_881) .cse2 v_ArrVal_884) (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_882) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_883))) (store .cse3 .cse2 (store (select .cse3 .cse2) .cse4 v_ArrVal_890))) .cse5) .cse6)) (bvadd (_ bv8 32) (select (select (let ((.cse7 (let ((.cse8 (store |c_#memory_$Pointer$#2.offset| .cse0 (store (select |c_#memory_$Pointer$#2.offset| .cse0) .cse1 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)))) (store .cse8 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| (store (store (select .cse8 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) v_ArrVal_880) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_891))))) (store .cse7 .cse2 (store (select .cse7 .cse2) .cse4 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse5) .cse6)))) |c_ULTIMATE.start_main_~data~0#1|))))) is different from false [2024-12-02 08:28:23,233 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_901 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_902 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_903 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_880 (_ BitVec 32)) (v_ArrVal_891 (_ BitVec 32)) (v_ArrVal_890 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32)) (v_ArrVal_882 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_883 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_884 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_885 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_34| (_ BitVec 32)) (v_ArrVal_881 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_34| v_ArrVal_903)) (.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse4 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_34| v_ArrVal_902) .cse2) .cse4)) (.cse1 (select (select .cse9 .cse2) .cse4))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_34|))) (not (= v_ArrVal_885 (store (select (store |c_#memory_int#2| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_34| v_ArrVal_901) .cse0) .cse1 (select v_ArrVal_885 .cse1)))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse5 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_int#2| .cse0 v_ArrVal_885) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_34| v_ArrVal_881) .cse2 v_ArrVal_884) (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_882) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_34| v_ArrVal_883))) (store .cse3 .cse2 (store (select .cse3 .cse2) .cse4 v_ArrVal_890))) .cse5) .cse6)) (bvadd (_ bv8 32) (select (select (let ((.cse7 (let ((.cse8 (store (select .cse9 .cse0) .cse1 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) (store (store |c_#memory_$Pointer$#2.offset| .cse0 .cse8) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_34| (store (store (select (store .cse9 .cse0 .cse8) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_34|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) v_ArrVal_880) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_891))))) (store .cse7 .cse2 (store (select .cse7 .cse2) .cse4 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse5) .cse6))))))))) is different from false [2024-12-02 08:28:23,477 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:28:23,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44530942] [2024-12-02 08:28:23,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44530942] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:28:23,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2089686497] [2024-12-02 08:28:23,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:23,478 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:28:23,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:28:23,479 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:28:23,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-12-02 08:28:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:23,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-12-02 08:28:23,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:28:24,050 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 [2024-12-02 08:28:24,075 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 [2024-12-02 08:28:24,510 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-12-02 08:28:24,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-12-02 08:28:24,563 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:28:24,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:28:24,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:28:24,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:28:24,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:28:25,042 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-02 08:28:25,042 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 97 treesize of output 82 [2024-12-02 08:28:25,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2024-12-02 08:28:25,071 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 24 treesize of output 11 [2024-12-02 08:28:25,687 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-12-02 08:28:25,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 143 treesize of output 139 [2024-12-02 08:28:25,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:25,704 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 24 treesize of output 21 [2024-12-02 08:28:25,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 78 [2024-12-02 08:28:25,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2024-12-02 08:28:25,745 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 [2024-12-02 08:28:25,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 20 [2024-12-02 08:28:25,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-12-02 08:28:26,380 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 66 treesize of output 26 [2024-12-02 08:28:26,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-02 08:28:26,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-12-02 08:28:26,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-12-02 08:28:31,052 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-12-02 08:28:31,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 28 [2024-12-02 08:28:31,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:31,085 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 74 treesize of output 45 [2024-12-02 08:28:31,130 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-12-02 08:28:31,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-12-02 08:28:31,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2024-12-02 08:28:31,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:32,675 INFO L349 Elim1Store]: treesize reduction 106, result has 9.4 percent of original size [2024-12-02 08:28:32,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 324 treesize of output 259 [2024-12-02 08:28:32,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 91 [2024-12-02 08:28:32,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 43 [2024-12-02 08:28:32,794 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 18 treesize of output 17 [2024-12-02 08:28:32,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 130 [2024-12-02 08:28:32,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 143 [2024-12-02 08:28:32,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2024-12-02 08:28:32,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 33 [2024-12-02 08:28:32,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:32,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2024-12-02 08:28:33,355 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 229 treesize of output 141 [2024-12-02 08:28:33,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 94 [2024-12-02 08:28:33,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:33,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:33,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:28:33,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 40 [2024-12-02 08:28:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:28:34,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:28:34,365 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1026 (_ BitVec 32)) (v_ArrVal_1031 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1027 (_ BitVec 32)) (v_ArrVal_1034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1029 (_ BitVec 32)) (v_ArrVal_1033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1036 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse4 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| .cse2) .cse4)) (.cse1 (select (select |c_#memory_$Pointer$#2.offset| .cse2) .cse4)) (.cse5 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_int#2| .cse0 (store (select |c_#memory_int#2| .cse0) .cse1 v_ArrVal_1029)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_1034) .cse2 v_ArrVal_1033) (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_1030) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_1036))) (store .cse3 .cse2 (store (select .cse3 .cse2) .cse4 v_ArrVal_1026))) .cse5) .cse6)) (bvadd (_ bv8 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_1031) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_1039) .cse2 (store (select (let ((.cse7 (store |c_#memory_$Pointer$#2.offset| .cse0 (store (select |c_#memory_$Pointer$#2.offset| .cse0) .cse1 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)))) (store .cse7 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| (store (store (select .cse7 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) .cse1) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_1027))) .cse2) .cse4 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)) .cse5) .cse6))))))) is different from false [2024-12-02 08:28:43,532 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1026 (_ BitVec 32)) (v_ArrVal_1027 (_ BitVec 32)) (v_ArrVal_1029 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32)) (v_ArrVal_1030 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1031 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_38| (_ BitVec 32)) (v_ArrVal_1050 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1049 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1036 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1048 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse8 (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_38| v_ArrVal_1048)) (.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse4 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_38| v_ArrVal_1050) .cse2) .cse4)) (.cse1 (select (select .cse8 .cse2) .cse4)) (.cse5 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_int#2| .cse0 (store (select (store |c_#memory_int#2| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_38| v_ArrVal_1049) .cse0) .cse1 v_ArrVal_1029)) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_38| v_ArrVal_1034) .cse2 v_ArrVal_1033) (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_1030) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_38| v_ArrVal_1036))) (store .cse3 .cse2 (store (select .cse3 .cse2) .cse4 v_ArrVal_1026))) .cse5) .cse6)) (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_1031) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_38| v_ArrVal_1039) .cse2 (store (select (let ((.cse7 (store (select .cse8 .cse0) .cse1 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) (store (store |c_#memory_$Pointer$#2.offset| .cse0 .cse7) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_38| (store (store (select (store .cse8 .cse0 .cse7) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_38|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) .cse1) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_1027))) .cse2) .cse4 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)) .cse5) .cse6) (_ bv8 32)))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_38|))))) is different from false [2024-12-02 08:28:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2089686497] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:28:43,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:28:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 43 [2024-12-02 08:28:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498391936] [2024-12-02 08:28:43,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:28:43,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 08:28:43,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:28:43,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 08:28:43,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2003, Unknown=39, NotChecked=470, Total=2652 [2024-12-02 08:28:43,576 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 43 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 34 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-02 08:29:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:29:01,206 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2024-12-02 08:29:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 08:29:01,206 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 34 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 37 [2024-12-02 08:29:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:29:01,207 INFO L225 Difference]: With dead ends: 62 [2024-12-02 08:29:01,207 INFO L226 Difference]: Without dead ends: 60 [2024-12-02 08:29:01,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=262, Invalid=3862, Unknown=56, NotChecked=650, Total=4830 [2024-12-02 08:29:01,210 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 57 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:29:01,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 305 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 896 Invalid, 5 Unknown, 0 Unchecked, 12.4s Time] [2024-12-02 08:29:01,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-12-02 08:29:01,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2024-12-02 08:29:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 08:29:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-12-02 08:29:01,223 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 37 [2024-12-02 08:29:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:29:01,223 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-12-02 08:29:01,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 34 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-02 08:29:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-12-02 08:29:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 08:29:01,224 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:29:01,224 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:01,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-12-02 08:29:01,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 08:29:01,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:29:01,625 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:29:01,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash -119315447, now seen corresponding path program 1 times [2024-12-02 08:29:01,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:29:01,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003888455] [2024-12-02 08:29:01,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:01,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:29:01,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:29:01,627 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:29:01,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 08:29:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:29:01,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-12-02 08:29:01,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:29:01,797 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 [2024-12-02 08:29:02,063 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:29:02,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:29:02,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:29:02,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:29:02,283 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-02 08:29:02,284 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 59 treesize of output 52 [2024-12-02 08:29:02,299 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 24 treesize of output 11 [2024-12-02 08:29:02,599 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-12-02 08:29:02,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 113 [2024-12-02 08:29:02,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:29:02,613 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 18 [2024-12-02 08:29:02,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2024-12-02 08:29:02,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 20 [2024-12-02 08:29:02,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 15 [2024-12-02 08:29:02,887 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 51 treesize of output 19 [2024-12-02 08:29:02,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-02 08:29:02,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:29:02,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 3 [2024-12-02 08:29:03,257 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-12-02 08:29:03,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2024-12-02 08:29:03,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:29:03,288 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 59 treesize of output 36 [2024-12-02 08:29:03,340 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-12-02 08:29:03,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-12-02 08:29:04,073 INFO L349 Elim1Store]: treesize reduction 104, result has 18.1 percent of original size [2024-12-02 08:29:04,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 442 treesize of output 322 [2024-12-02 08:29:04,719 INFO L349 Elim1Store]: treesize reduction 189, result has 7.8 percent of original size [2024-12-02 08:29:04,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 705 treesize of output 539 [2024-12-02 08:29:04,847 INFO L349 Elim1Store]: treesize reduction 514, result has 5.3 percent of original size [2024-12-02 08:29:04,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 543 treesize of output 150 [2024-12-02 08:29:04,890 INFO L349 Elim1Store]: treesize reduction 100, result has 6.5 percent of original size [2024-12-02 08:29:04,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 163 treesize of output 96 [2024-12-02 08:29:04,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 82 [2024-12-02 08:29:05,067 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 08:29:05,067 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 15 treesize of output 7 [2024-12-02 08:29:05,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 54 [2024-12-02 08:29:05,453 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 83 treesize of output 51 [2024-12-02 08:29:05,458 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 08:29:05,459 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 48 treesize of output 19 [2024-12-02 08:29:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:05,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:29:06,053 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1163 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1168 (_ BitVec 32)) (v_ArrVal_1160 (_ BitVec 32)) (v_ArrVal_1162 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (not (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse0 (let ((.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| .cse4) .cse5)) (.cse7 (select (select |c_#memory_$Pointer$#2.offset| .cse4) .cse5)) (.cse2 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (let ((.cse1 (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse6 (store (select |c_#memory_$Pointer$#2.base| .cse6) .cse7 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_1163))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_ArrVal_1168))))) (select .cse1 (select (select .cse1 .cse0) .cse2))) (select (select (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$#2.offset| .cse6 (store (select |c_#memory_$Pointer$#2.offset| .cse6) .cse7 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)))) (store .cse9 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| (store (store (select .cse9 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) v_ArrVal_1160) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_1162))))) (store .cse8 .cse4 (store (select .cse8 .cse4) .cse5 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse0) .cse2)))))))) is different from false [2024-12-02 08:29:06,281 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1163 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1168 (_ BitVec 32)) (v_ArrVal_1160 (_ BitVec 32)) (v_ArrVal_1162 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (not (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (let ((.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| .cse4) .cse5)) (.cse7 (select (select |c_#memory_$Pointer$#2.offset| .cse4) .cse5)) (.cse2 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (let ((.cse0 (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse6 (store (select |c_#memory_$Pointer$#2.base| .cse6) .cse7 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|)) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_1163))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_ArrVal_1168))))) (select .cse0 (select (select .cse0 .cse1) .cse2))) (select (select (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$#2.offset| .cse6 (store (select |c_#memory_$Pointer$#2.offset| .cse6) .cse7 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)))) (store .cse9 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| (store (store (select .cse9 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) v_ArrVal_1160) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_1162))))) (store .cse8 .cse4 (store (select .cse8 .cse4) .cse5 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse1) .cse2)))) .cse1)))) is different from false [2024-12-02 08:29:07,013 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1174 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1163 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1168 (_ BitVec 32)) (|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_42| (_ BitVec 32)) (v_ArrVal_1175 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1160 (_ BitVec 32)) (v_ArrVal_1162 (_ BitVec 32)) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (or (not (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (let ((.cse11 (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_42| v_ArrVal_1175)) (.cse7 (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_42| v_ArrVal_1174)) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse6 (select (select .cse7 .cse4) .cse5)) (.cse8 (select (select .cse11 .cse4) .cse5)) (.cse2 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (let ((.cse0 (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse6 (store (select .cse7 .cse6) .cse8 |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_42|)) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_42| v_ArrVal_1163))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_ArrVal_1168))))) (select .cse0 (select (select .cse0 .cse1) .cse2))) (select (select (let ((.cse9 (let ((.cse10 (store (select .cse11 .cse6) .cse8 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) (store (store |c_#memory_$Pointer$#2.offset| .cse6 .cse10) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_42| (store (store (select (store .cse11 .cse6 .cse10) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_42|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) v_ArrVal_1160) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_1162))))) (store .cse9 .cse4 (store (select .cse9 .cse4) .cse5 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) .cse1) .cse2)))) .cse1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_42|))))) is different from false [2024-12-02 08:29:07,059 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:29:07,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003888455] [2024-12-02 08:29:07,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003888455] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:29:07,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [753820643] [2024-12-02 08:29:07,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:29:07,060 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:29:07,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:29:07,061 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:29:07,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-12-02 08:29:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:29:07,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-12-02 08:29:07,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:29:07,733 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 [2024-12-02 08:29:08,322 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:29:08,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:29:08,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:29:08,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:29:08,746 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-02 08:29:08,746 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 59 treesize of output 52 [2024-12-02 08:29:08,758 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 24 treesize of output 11 [2024-12-02 08:29:09,260 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-12-02 08:29:09,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 109 [2024-12-02 08:29:09,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:29:09,274 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 24 treesize of output 21 [2024-12-02 08:29:09,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2024-12-02 08:29:09,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 20 [2024-12-02 08:29:09,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-12-02 08:29:09,756 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 51 treesize of output 19 [2024-12-02 08:29:09,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-02 08:29:09,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:29:09,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 7 [2024-12-02 08:29:14,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:29:14,312 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 59 treesize of output 36 [2024-12-02 08:29:14,348 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-12-02 08:29:14,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-12-02 08:29:14,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 20 [2024-12-02 08:29:14,990 INFO L349 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2024-12-02 08:29:14,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 130 [2024-12-02 08:29:15,178 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2024-12-02 08:29:15,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 263 treesize of output 151 [2024-12-02 08:29:15,960 INFO L349 Elim1Store]: treesize reduction 189, result has 7.8 percent of original size [2024-12-02 08:29:15,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 354 treesize of output 232 [2024-12-02 08:29:15,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 115 [2024-12-02 08:29:16,125 INFO L349 Elim1Store]: treesize reduction 84, result has 7.7 percent of original size [2024-12-02 08:29:16,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 210 treesize of output 139 [2024-12-02 08:29:16,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 140 [2024-12-02 08:29:16,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-12-02 08:29:16,653 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-02 08:29:16,653 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 15 treesize of output 7 [2024-12-02 08:29:17,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:29:17,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:29:17,008 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 36 treesize of output 24 [2024-12-02 08:29:17,254 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 67 treesize of output 43 [2024-12-02 08:29:17,268 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-02 08:29:17,268 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 40 treesize of output 19 [2024-12-02 08:29:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:17,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:29:17,458 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1287 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1293 (_ BitVec 32)) (v_ArrVal_1292 (_ BitVec 32)) (v_ArrVal_1289 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1295 (_ BitVec 32)) (v_ArrVal_1291 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (not (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= .cse0 (let ((.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| .cse4) .cse5)) (.cse7 (select (select |c_#memory_$Pointer$#2.offset| .cse4) .cse5)) (.cse2 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (let ((.cse1 (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse6 (store (select |c_#memory_$Pointer$#2.base| .cse6) .cse7 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_1289))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_ArrVal_1295))))) (select .cse1 (select (select .cse1 .cse0) .cse2))) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_1291) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_1287) .cse4 (store (select (let ((.cse8 (store |c_#memory_$Pointer$#2.offset| .cse6 (store (select |c_#memory_$Pointer$#2.offset| .cse6) .cse7 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)))) (store .cse8 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| (store (store (select .cse8 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) v_ArrVal_1292) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_1293))) .cse4) .cse5 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)) .cse0) .cse2)))))))) is different from false [2024-12-02 08:29:17,742 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1287 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1293 (_ BitVec 32)) (v_ArrVal_1292 (_ BitVec 32)) (v_ArrVal_1289 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1295 (_ BitVec 32)) (v_ArrVal_1291 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (not (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (let ((.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse6 (select (select |c_#memory_$Pointer$#2.base| .cse4) .cse5)) (.cse7 (select (select |c_#memory_$Pointer$#2.offset| .cse4) .cse5)) (.cse2 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (let ((.cse0 (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse6 (store (select |c_#memory_$Pointer$#2.base| .cse6) .cse7 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|)) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_1289))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_ArrVal_1295))))) (select .cse0 (select (select .cse0 .cse1) .cse2))) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_1291) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_1287) .cse4 (store (select (let ((.cse8 (store |c_#memory_$Pointer$#2.offset| .cse6 (store (select |c_#memory_$Pointer$#2.offset| .cse6) .cse7 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)))) (store .cse8 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| (store (store (select .cse8 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) v_ArrVal_1292) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_1293))) .cse4) .cse5 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)) .cse1) .cse2)))) .cse1)))) is different from false [2024-12-02 08:29:18,615 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_46| (_ BitVec 32)) (v_ArrVal_1287 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1293 (_ BitVec 32)) (v_ArrVal_1292 (_ BitVec 32)) (v_ArrVal_1300 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1289 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1295 (_ BitVec 32)) (v_ArrVal_1301 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1291 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (_ BitVec 32))) (or (not (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (= (let ((.cse10 (store |c_#memory_$Pointer$#2.offset| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_46| v_ArrVal_1301)) (.cse7 (store |c_#memory_$Pointer$#2.base| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_46| v_ArrVal_1300)) (.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse5 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse6 (select (select .cse7 .cse4) .cse5)) (.cse8 (select (select .cse10 .cse4) .cse5)) (.cse2 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (let ((.cse0 (let ((.cse3 (store (store |c_#memory_$Pointer$#2.base| .cse6 (store (select .cse7 .cse6) .cse8 |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_46|)) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_46| v_ArrVal_1289))) (store .cse3 .cse4 (store (select .cse3 .cse4) .cse5 v_ArrVal_1295))))) (select .cse0 (select (select .cse0 .cse1) .cse2))) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse6 v_ArrVal_1291) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_46| v_ArrVal_1287) .cse4 (store (select (let ((.cse9 (store (select .cse10 .cse6) .cse8 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) (store (store |c_#memory_$Pointer$#2.offset| .cse6 .cse9) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_46| (store (store (select (store .cse10 .cse6 .cse9) |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_46|) (bvadd (_ bv4 32) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|) v_ArrVal_1292) |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_1293))) .cse4) .cse5 |ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)) .cse1) .cse2)))) .cse1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_dll_circular_append_#t~ret9#1.base_46|))))) is different from false [2024-12-02 08:29:18,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [753820643] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:29:18,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:29:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 43 [2024-12-02 08:29:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301507562] [2024-12-02 08:29:18,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:29:18,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 08:29:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:29:18,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 08:29:18,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1935, Unknown=9, NotChecked=558, Total=2652 [2024-12-02 08:29:18,794 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 43 states, 40 states have (on average 1.45) internal successors, (58), 34 states have internal predecessors, (58), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-02 08:29:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:29:31,204 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2024-12-02 08:29:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 08:29:31,204 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 1.45) internal successors, (58), 34 states have internal predecessors, (58), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 39 [2024-12-02 08:29:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:29:31,205 INFO L225 Difference]: With dead ends: 64 [2024-12-02 08:29:31,205 INFO L226 Difference]: Without dead ends: 61 [2024-12-02 08:29:31,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=232, Invalid=2860, Unknown=12, NotChecked=678, Total=3782 [2024-12-02 08:29:31,206 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 57 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:29:31,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 320 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 810 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2024-12-02 08:29:31,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-12-02 08:29:31,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2024-12-02 08:29:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 08:29:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2024-12-02 08:29:31,222 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 39 [2024-12-02 08:29:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:29:31,222 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2024-12-02 08:29:31,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 1.45) internal successors, (58), 34 states have internal predecessors, (58), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-02 08:29:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2024-12-02 08:29:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 08:29:31,223 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:29:31,223 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:29:31,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-12-02 08:29:31,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 08:29:31,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:29:31,624 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:29:31,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:29:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash 596111394, now seen corresponding path program 2 times [2024-12-02 08:29:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:29:31,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432249492] [2024-12-02 08:29:31,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:29:31,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:29:31,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:29:31,626 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:29:31,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 08:29:31,877 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:29:31,877 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:29:31,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-12-02 08:29:31,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:29:31,891 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 [2024-12-02 08:29:32,171 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:29:32,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:29:32,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:29:32,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:29:32,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:29:32,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:29:32,652 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-12-02 08:29:32,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 109 treesize of output 113 [2024-12-02 08:29:32,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:29:32,662 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 18 [2024-12-02 08:29:32,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 15 [2024-12-02 08:29:32,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 64 [2024-12-02 08:29:33,015 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 08:29:33,016 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 172 treesize of output 97 [2024-12-02 08:29:33,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2024-12-02 08:29:33,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-12-02 08:29:33,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-02 08:29:33,289 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 [2024-12-02 08:29:33,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:29:33,512 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-12-02 08:29:33,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 180 treesize of output 111 [2024-12-02 08:29:33,569 INFO L349 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2024-12-02 08:29:33,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2024-12-02 08:29:33,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2024-12-02 08:29:34,752 INFO L349 Elim1Store]: treesize reduction 104, result has 18.1 percent of original size [2024-12-02 08:29:34,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 414 treesize of output 262 [2024-12-02 08:29:36,094 INFO L349 Elim1Store]: treesize reduction 189, result has 7.8 percent of original size [2024-12-02 08:29:36,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 824 treesize of output 564 [2024-12-02 08:29:36,243 INFO L349 Elim1Store]: treesize reduction 167, result has 11.2 percent of original size [2024-12-02 08:29:36,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 596 treesize of output 279 [2024-12-02 08:29:36,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 523 treesize of output 468 [2024-12-02 08:29:36,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:29:36,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 281 treesize of output 115 [2024-12-02 08:29:36,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 41 [2024-12-02 08:29:36,589 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 08:29:36,589 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 15 treesize of output 7 [2024-12-02 08:29:37,807 INFO L349 Elim1Store]: treesize reduction 32, result has 81.9 percent of original size [2024-12-02 08:29:37,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 2203 treesize of output 1565 [2024-12-02 08:29:37,839 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 600 treesize of output 440 [2024-12-02 08:29:37,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 434 treesize of output 307 [2024-12-02 08:29:38,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2024-12-02 08:29:38,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2024-12-02 08:29:38,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-12-02 08:29:38,299 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 [2024-12-02 08:29:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:29:38,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:29:39,652 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1418 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1412 (_ BitVec 32)) (v_ArrVal_1415 (_ BitVec 32)) (v_ArrVal_1416 (_ BitVec 32)) (v_ArrVal_1424 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1417 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1426 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse10 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse11 (select (select |c_#memory_$Pointer$#2.base| .cse2) .cse10))) (let ((.cse0 (store |c_#memory_int#2| .cse11 v_ArrVal_1424)) (.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|))) (or (not (= (store (store (select .cse0 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|) .cse1 (select v_ArrVal_1417 .cse1)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| (select v_ArrVal_1417 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)) v_ArrVal_1417)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse12 (select (select |c_#memory_$Pointer$#2.offset| .cse2) .cse10))) (let ((.cse6 (let ((.cse13 (let ((.cse14 (store |c_#memory_$Pointer$#2.offset| .cse11 (store (select |c_#memory_$Pointer$#2.offset| .cse11) .cse12 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)))) (store .cse14 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| (store (store (select .cse14 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|) .cse1 v_ArrVal_1416) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset| v_ArrVal_1412))))) (store .cse13 .cse2 (store (select .cse13 .cse2) .cse10 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.offset|)))) (.cse3 (let ((.cse9 (store (store |c_#memory_$Pointer$#2.base| .cse11 (store (select |c_#memory_$Pointer$#2.base| .cse11) .cse12 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base|)) |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_1418))) (store .cse9 .cse2 (store (select .cse9 .cse2) .cse10 v_ArrVal_1415)))) (.cse7 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse4 (select (select .cse3 .cse7) .cse8)) (.cse5 (select (select .cse6 .cse7) .cse8))) (select (select (store (store .cse0 |c_ULTIMATE.start_dll_circular_append_~new_last~0#1.base| v_ArrVal_1417) .cse2 v_ArrVal_1426) (select (select .cse3 .cse4) .cse5)) (bvadd (_ bv8 32) (select (select .cse6 .cse4) .cse5)))))))))))) is different from false [2024-12-02 08:29:40,439 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1418 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1412 (_ BitVec 32)) (v_ArrVal_1415 (_ BitVec 32)) (v_ArrVal_1416 (_ BitVec 32)) (v_ArrVal_1424 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1417 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1426 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)) (.cse9 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_dll_circular_append_~head#1.base|) |c_ULTIMATE.start_dll_circular_append_~head#1.offset|)))) (let ((.cse10 (select (select |c_#memory_$Pointer$#2.base| .cse1) .cse9))) (let ((.cse0 (store |c_#memory_int#2| .cse10 v_ArrVal_1424)) (.cse14 (bvadd (_ bv4 32) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.offset|))) (or (= (let ((.cse11 (select (select |c_#memory_$Pointer$#2.offset| .cse1) .cse9))) (let ((.cse5 (let ((.cse12 (let ((.cse13 (store |c_#memory_$Pointer$#2.offset| .cse10 (store (select |c_#memory_$Pointer$#2.offset| .cse10) .cse11 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.offset|)))) (store .cse13 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| (store (store (select .cse13 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|) .cse14 v_ArrVal_1416) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.offset| v_ArrVal_1412))))) (store .cse12 .cse1 (store (select .cse12 .cse1) .cse9 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.offset|)))) (.cse2 (let ((.cse8 (store (store |c_#memory_$Pointer$#2.base| .cse10 (store (select |c_#memory_$Pointer$#2.base| .cse10) .cse11 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|)) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_1418))) (store .cse8 .cse1 (store (select .cse8 .cse1) .cse9 v_ArrVal_1415)))) (.cse6 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse7 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (let ((.cse3 (select (select .cse2 .cse6) .cse7)) (.cse4 (select (select .cse5 .cse6) .cse7))) (select (select (store (store .cse0 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base| v_ArrVal_1417) .cse1 v_ArrVal_1426) (select (select .cse2 .cse3) .cse4)) (bvadd (select (select .cse5 .cse3) .cse4) (_ bv8 32)))))) |c_ULTIMATE.start_main_~data~0#1|) (not (= (store (store (select .cse0 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.base|) .cse14 (select v_ArrVal_1417 .cse14)) |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.offset| (select v_ArrVal_1417 |c_ULTIMATE.start_dll_circular_append_#t~ret9#1.offset|)) v_ArrVal_1417))))))) is different from false [2024-12-02 08:29:43,140 INFO L349 Elim1Store]: treesize reduction 2829, result has 50.1 percent of original size [2024-12-02 08:29:43,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 136366 treesize of output 127902 [2024-12-02 08:29:43,783 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:29:43,783 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 11392 treesize of output 11392 [2024-12-02 08:29:44,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32061 treesize of output 28161 [2024-12-02 08:29:44,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7648 treesize of output 4528 [2024-12-02 08:29:44,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 784 treesize of output 4 [2024-12-02 08:30:07,933 INFO L224 Elim1Store]: Index analysis took 111 ms [2024-12-02 08:30:08,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 08:30:08,347 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 52282 treesize of output 46822 [2024-12-02 08:31:51,213 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:31:51,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432249492] [2024-12-02 08:31:51,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432249492] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:31:51,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [77100682] [2024-12-02 08:31:51,213 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:31:51,213 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 08:31:51,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 08:31:51,215 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 08:31:51,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d711464d-eddf-4fce-bdf6-4f242facbd4d/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-12-02 08:31:51,863 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:31:51,863 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:31:51,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-12-02 08:31:51,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:31:55,296 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 [2024-12-02 08:32:07,930 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 08:32:07,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 08:32:12,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:32:12,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 08:32:16,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:32:16,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-12-02 08:32:24,384 INFO L349 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2024-12-02 08:32:24,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 109 [2024-12-02 08:32:24,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 08:32:24,397 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 24 treesize of output 21 [2024-12-02 08:32:24,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 64 [2024-12-02 08:32:24,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2024-12-02 08:32:33,369 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 08:32:33,369 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 172 treesize of output 97 [2024-12-02 08:32:33,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-12-02 08:32:33,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-12-02 08:32:33,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-02 08:32:42,018 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