./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f37aa3f5f53d7516c3aab2329ab9f19add00a9b7f37383228b3b0ae48d55a761 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:56,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:56,569 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:47:56,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:56,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:56,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:56,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:56,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:56,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:56,642 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:56,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:56,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:56,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:56,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:56,648 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:56,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:56,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:56,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:56,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:56,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:56,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:56,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:56,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:56,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:56,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:56,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:56,655 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:56,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:56,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:56,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:56,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:56,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:56,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:56,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:56,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:56,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:56,661 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:56,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:56,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:56,662 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f37aa3f5f53d7516c3aab2329ab9f19add00a9b7f37383228b3b0ae48d55a761 [2023-11-26 11:47:57,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:57,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:57,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:57,101 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:57,101 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:57,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2023-11-26 11:48:00,684 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:01,281 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:01,282 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2023-11-26 11:48:01,331 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/data/53c39a9c9/18c3358262d246dabe612f16fe137acd/FLAG2323e74b6 [2023-11-26 11:48:01,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/data/53c39a9c9/18c3358262d246dabe612f16fe137acd [2023-11-26 11:48:01,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:01,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:01,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:01,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:01,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:01,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c898458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:01, skipping insertion in model container [2023-11-26 11:48:01,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:01" (1/1) ... [2023-11-26 11:48:01,513 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:03,183 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i[148417,148430] [2023-11-26 11:48:03,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:03,386 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:03,800 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i[148417,148430] [2023-11-26 11:48:03,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:03,889 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:03,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03 WrapperNode [2023-11-26 11:48:03,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:03,892 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:03,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:03,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:03,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:03,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,086 INFO L138 Inliner]: procedures = 167, calls = 938, calls flagged for inlining = 60, calls inlined = 52, statements flattened = 2097 [2023-11-26 11:48:04,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:04,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:04,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:04,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:04,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,254 INFO L175 MemorySlicer]: Split 529 memory accesses to 19 slices as follows [2, 13, 13, 13, 6, 5, 138, 14, 2, 33, 9, 2, 4, 7, 20, 2, 22, 6, 218]. 41 percent of accesses are in the largest equivalence class. The 197 initializations are split as follows [2, 0, 13, 13, 6, 5, 0, 14, 0, 24, 0, 0, 4, 4, 20, 0, 22, 0, 70]. The 199 writes are split as follows [0, 9, 0, 0, 0, 0, 136, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 49]. [2023-11-26 11:48:04,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,363 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:04,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:04,549 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:04,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:04,550 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (1/1) ... [2023-11-26 11:48:04,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:04,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:04,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:04,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure do_pcd_request [2023-11-26 11:48:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure do_pcd_request [2023-11-26 11:48:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2023-11-26 11:48:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2023-11-26 11:48:04,641 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2023-11-26 11:48:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2023-11-26 11:48:04,641 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_audio_ioctl [2023-11-26 11:48:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_audio_ioctl [2023-11-26 11:48:04,642 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2023-11-26 11:48:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2023-11-26 11:48:04,642 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2023-11-26 11:48:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2023-11-26 11:48:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-26 11:48:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-26 11:48:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-26 11:48:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-26 11:48:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-26 11:48:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-26 11:48:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-26 11:48:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-26 11:48:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-11-26 11:48:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-11-26 11:48:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2023-11-26 11:48:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2023-11-26 11:48:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2023-11-26 11:48:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2023-11-26 11:48:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2023-11-26 11:48:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#15 [2023-11-26 11:48:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#16 [2023-11-26 11:48:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#17 [2023-11-26 11:48:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#18 [2023-11-26 11:48:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure ps_set_intr [2023-11-26 11:48:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ps_set_intr [2023-11-26 11:48:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_packet [2023-11-26 11:48:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_packet [2023-11-26 11:48:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-26 11:48:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-26 11:48:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-26 11:48:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-26 11:48:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-26 11:48:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-26 11:48:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-26 11:48:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2023-11-26 11:48:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2023-11-26 11:48:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2023-11-26 11:48:04,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#10 [2023-11-26 11:48:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#11 [2023-11-26 11:48:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#12 [2023-11-26 11:48:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#13 [2023-11-26 11:48:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#14 [2023-11-26 11:48:04,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#15 [2023-11-26 11:48:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#16 [2023-11-26 11:48:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#17 [2023-11-26 11:48:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#18 [2023-11-26 11:48:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-26 11:48:04,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-26 11:48:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-26 11:48:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-26 11:48:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-26 11:48:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-26 11:48:04,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-26 11:48:04,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-26 11:48:04,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2023-11-26 11:48:04,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2023-11-26 11:48:04,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2023-11-26 11:48:04,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2023-11-26 11:48:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2023-11-26 11:48:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#13 [2023-11-26 11:48:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#14 [2023-11-26 11:48:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#15 [2023-11-26 11:48:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#16 [2023-11-26 11:48:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#17 [2023-11-26 11:48:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#18 [2023-11-26 11:48:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:48:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:48:04,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:48:04,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:48:04,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:48:04,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:48:04,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:48:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:48:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-26 11:48:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-26 11:48:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-26 11:48:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-26 11:48:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-26 11:48:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-26 11:48:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-26 11:48:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-26 11:48:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2023-11-26 11:48:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2023-11-26 11:48:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2023-11-26 11:48:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_drive_status [2023-11-26 11:48:04,669 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_drive_status [2023-11-26 11:48:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2023-11-26 11:48:04,669 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2023-11-26 11:48:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-26 11:48:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-26 11:48:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-26 11:48:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-26 11:48:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-26 11:48:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-26 11:48:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-26 11:48:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2023-11-26 11:48:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#8 [2023-11-26 11:48:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#9 [2023-11-26 11:48:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#10 [2023-11-26 11:48:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#11 [2023-11-26 11:48:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#12 [2023-11-26 11:48:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#13 [2023-11-26 11:48:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#14 [2023-11-26 11:48:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#15 [2023-11-26 11:48:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#16 [2023-11-26 11:48:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#17 [2023-11-26 11:48:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#18 [2023-11-26 11:48:04,674 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-26 11:48:04,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-26 11:48:04,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-26 11:48:04,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-26 11:48:04,676 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-26 11:48:04,676 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-26 11:48:04,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-26 11:48:04,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2023-11-26 11:48:04,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#8 [2023-11-26 11:48:04,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#9 [2023-11-26 11:48:04,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#10 [2023-11-26 11:48:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#11 [2023-11-26 11:48:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#12 [2023-11-26 11:48:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#13 [2023-11-26 11:48:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#14 [2023-11-26 11:48:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#15 [2023-11-26 11:48:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#16 [2023-11-26 11:48:04,679 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#17 [2023-11-26 11:48:04,679 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#18 [2023-11-26 11:48:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-26 11:48:04,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-26 11:48:04,680 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2023-11-26 11:48:04,680 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2023-11-26 11:48:04,681 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_tray_move [2023-11-26 11:48:04,681 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_tray_move [2023-11-26 11:48:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure do_pcd_read [2023-11-26 11:48:04,682 INFO L138 BoogieDeclarations]: Found implementation of procedure do_pcd_read [2023-11-26 11:48:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:48:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:48:04,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:48:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:48:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:48:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:48:04,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:48:04,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:48:04,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-26 11:48:04,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-26 11:48:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-26 11:48:04,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-26 11:48:04,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-26 11:48:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-26 11:48:04,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-26 11:48:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-26 11:48:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2023-11-26 11:48:04,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2023-11-26 11:48:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2023-11-26 11:48:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-26 11:48:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-26 11:48:04,699 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_check_events [2023-11-26 11:48:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_check_events [2023-11-26 11:48:04,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-26 11:48:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-26 11:48:04,699 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_lock_door [2023-11-26 11:48:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_lock_door [2023-11-26 11:48:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:48:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2023-11-26 11:48:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2023-11-26 11:48:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-26 11:48:04,700 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-26 11:48:04,700 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_block_check_events [2023-11-26 11:48:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_block_check_events [2023-11-26 11:48:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-26 11:48:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-26 11:48:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_sleep [2023-11-26 11:48:04,701 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_sleep [2023-11-26 11:48:04,701 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_wait [2023-11-26 11:48:04,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_wait [2023-11-26 11:48:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_atapi [2023-11-26 11:48:04,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_atapi [2023-11-26 11:48:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pcd_mutex [2023-11-26 11:48:04,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pcd_mutex [2023-11-26 11:48:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_get_mcn [2023-11-26 11:48:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_get_mcn [2023-11-26 11:48:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-26 11:48:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-26 11:48:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:48:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:48:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:48:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:48:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:48:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:48:04,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:48:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:48:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 11:48:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-26 11:48:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-26 11:48:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-11-26 11:48:04,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-11-26 11:48:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-11-26 11:48:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-11-26 11:48:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-11-26 11:48:04,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2023-11-26 11:48:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2023-11-26 11:48:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2023-11-26 11:48:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#18 [2023-11-26 11:48:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_identify [2023-11-26 11:48:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_identify [2023-11-26 11:48:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure next_request [2023-11-26 11:48:04,708 INFO L138 BoogieDeclarations]: Found implementation of procedure next_request [2023-11-26 11:48:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:48:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:48:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:48:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:48:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:48:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:48:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:48:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 11:48:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-26 11:48:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-26 11:48:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-11-26 11:48:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-11-26 11:48:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-11-26 11:48:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-11-26 11:48:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-11-26 11:48:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2023-11-26 11:48:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2023-11-26 11:48:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2023-11-26 11:48:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#18 [2023-11-26 11:48:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-26 11:48:04,711 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-26 11:48:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_probe [2023-11-26 11:48:04,711 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_probe [2023-11-26 11:48:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_command [2023-11-26 11:48:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_command [2023-11-26 11:48:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_completion [2023-11-26 11:48:04,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_completion [2023-11-26 11:48:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:48:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_drive_reset [2023-11-26 11:48:04,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_drive_reset [2023-11-26 11:48:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:48:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:48:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:48:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:48:04,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:48:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:48:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:48:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-26 11:48:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-26 11:48:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-26 11:48:04,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-11-26 11:48:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-11-26 11:48:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-11-26 11:48:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-11-26 11:48:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-11-26 11:48:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2023-11-26 11:48:04,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2023-11-26 11:48:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2023-11-26 11:48:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#18 [2023-11-26 11:48:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2023-11-26 11:48:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2023-11-26 11:48:04,716 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2023-11-26 11:48:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2023-11-26 11:48:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-26 11:48:04,717 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-26 11:48:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2023-11-26 11:48:04,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2023-11-26 11:48:04,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pcd_mutex [2023-11-26 11:48:04,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pcd_mutex [2023-11-26 11:48:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2023-11-26 11:48:04,718 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2023-11-26 11:48:04,718 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-26 11:48:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-26 11:48:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2023-11-26 11:48:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2023-11-26 11:48:04,723 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_reset [2023-11-26 11:48:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_reset [2023-11-26 11:48:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:48:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:48:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:48:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:48:04,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:48:04,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:48:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:48:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:48:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 11:48:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 11:48:04,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 11:48:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 11:48:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-26 11:48:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-26 11:48:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-26 11:48:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-26 11:48:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-26 11:48:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-26 11:48:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-26 11:48:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure pcd_block_ioctl [2023-11-26 11:48:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure pcd_block_ioctl [2023-11-26 11:48:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-26 11:48:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-26 11:48:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-26 11:48:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-26 11:48:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-26 11:48:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-26 11:48:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-26 11:48:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2023-11-26 11:48:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2023-11-26 11:48:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2023-11-26 11:48:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#10 [2023-11-26 11:48:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#11 [2023-11-26 11:48:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#12 [2023-11-26 11:48:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#13 [2023-11-26 11:48:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#14 [2023-11-26 11:48:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#15 [2023-11-26 11:48:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#16 [2023-11-26 11:48:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#17 [2023-11-26 11:48:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#18 [2023-11-26 11:48:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:04,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure pi_do_claimed [2023-11-26 11:48:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_do_claimed [2023-11-26 11:48:05,406 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:05,411 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:14,725 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:14,937 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:14,937 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-26 11:48:14,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:14 BoogieIcfgContainer [2023-11-26 11:48:14,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:14,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:14,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:14,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:14,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:01" (1/3) ... [2023-11-26 11:48:14,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2b8dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:14, skipping insertion in model container [2023-11-26 11:48:14,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:03" (2/3) ... [2023-11-26 11:48:14,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2b8dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:14, skipping insertion in model container [2023-11-26 11:48:14,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:14" (3/3) ... [2023-11-26 11:48:14,947 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pcd.ko-main.cil.out.i [2023-11-26 11:48:14,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:14,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:48:15,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:15,040 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3f6708b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:15,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:48:15,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 731 states, 512 states have (on average 1.47265625) internal successors, (754), 536 states have internal predecessors, (754), 175 states have call successors, (175), 47 states have call predecessors, (175), 47 states have return successors, (175), 170 states have call predecessors, (175), 175 states have call successors, (175) [2023-11-26 11:48:15,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 11:48:15,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:15,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:15,062 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:15,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:15,068 INFO L85 PathProgramCache]: Analyzing trace with hash -186845253, now seen corresponding path program 1 times [2023-11-26 11:48:15,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:15,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962003881] [2023-11-26 11:48:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:15,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:15,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:15,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962003881] [2023-11-26 11:48:15,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962003881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:15,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:15,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:15,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972237428] [2023-11-26 11:48:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:15,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:15,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:15,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:15,668 INFO L87 Difference]: Start difference. First operand has 731 states, 512 states have (on average 1.47265625) internal successors, (754), 536 states have internal predecessors, (754), 175 states have call successors, (175), 47 states have call predecessors, (175), 47 states have return successors, (175), 170 states have call predecessors, (175), 175 states have call successors, (175) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:16,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:16,181 INFO L93 Difference]: Finished difference Result 2103 states and 3264 transitions. [2023-11-26 11:48:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:16,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-26 11:48:16,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:16,210 INFO L225 Difference]: With dead ends: 2103 [2023-11-26 11:48:16,210 INFO L226 Difference]: Without dead ends: 1369 [2023-11-26 11:48:16,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:16,226 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 972 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:16,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1933 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:48:16,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2023-11-26 11:48:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1357. [2023-11-26 11:48:16,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 952 states have (on average 1.4600840336134453) internal successors, (1390), 984 states have internal predecessors, (1390), 318 states have call successors, (318), 87 states have call predecessors, (318), 86 states have return successors, (312), 301 states have call predecessors, (312), 312 states have call successors, (312) [2023-11-26 11:48:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 2020 transitions. [2023-11-26 11:48:16,452 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 2020 transitions. Word has length 14 [2023-11-26 11:48:16,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:16,453 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 2020 transitions. [2023-11-26 11:48:16,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 2020 transitions. [2023-11-26 11:48:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-26 11:48:16,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:16,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:16,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:48:16,458 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:16,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1170641502, now seen corresponding path program 1 times [2023-11-26 11:48:16,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:16,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984524034] [2023-11-26 11:48:16,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:16,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:16,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:48:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:16,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984524034] [2023-11-26 11:48:16,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984524034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:16,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:16,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:16,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17599099] [2023-11-26 11:48:16,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:16,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:16,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:16,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:16,770 INFO L87 Difference]: Start difference. First operand 1357 states and 2020 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:17,287 INFO L93 Difference]: Finished difference Result 3756 states and 5577 transitions. [2023-11-26 11:48:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-26 11:48:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:17,313 INFO L225 Difference]: With dead ends: 3756 [2023-11-26 11:48:17,314 INFO L226 Difference]: Without dead ends: 2400 [2023-11-26 11:48:17,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:17,324 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 1021 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:17,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1830 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:48:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2023-11-26 11:48:17,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2382. [2023-11-26 11:48:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1643 states have (on average 1.454047474132684) internal successors, (2389), 1700 states have internal predecessors, (2389), 575 states have call successors, (575), 164 states have call predecessors, (575), 163 states have return successors, (569), 549 states have call predecessors, (569), 569 states have call successors, (569) [2023-11-26 11:48:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3533 transitions. [2023-11-26 11:48:17,522 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3533 transitions. Word has length 16 [2023-11-26 11:48:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:17,523 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3533 transitions. [2023-11-26 11:48:17,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3533 transitions. [2023-11-26 11:48:17,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-26 11:48:17,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:17,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:48:17,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:17,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1821829914, now seen corresponding path program 1 times [2023-11-26 11:48:17,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:17,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253393618] [2023-11-26 11:48:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:17,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:17,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:17,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253393618] [2023-11-26 11:48:17,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253393618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:17,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:17,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:17,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656654032] [2023-11-26 11:48:17,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:17,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:17,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:17,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:17,762 INFO L87 Difference]: Start difference. First operand 2382 states and 3533 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:18,115 INFO L93 Difference]: Finished difference Result 4763 states and 7065 transitions. [2023-11-26 11:48:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:18,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-26 11:48:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:18,138 INFO L225 Difference]: With dead ends: 4763 [2023-11-26 11:48:18,138 INFO L226 Difference]: Without dead ends: 2382 [2023-11-26 11:48:18,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:18,152 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 1049 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:18,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 973 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2023-11-26 11:48:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2382. [2023-11-26 11:48:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1643 states have (on average 1.4528301886792452) internal successors, (2387), 1700 states have internal predecessors, (2387), 575 states have call successors, (575), 164 states have call predecessors, (575), 163 states have return successors, (569), 549 states have call predecessors, (569), 569 states have call successors, (569) [2023-11-26 11:48:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3531 transitions. [2023-11-26 11:48:18,337 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3531 transitions. Word has length 16 [2023-11-26 11:48:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:18,338 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3531 transitions. [2023-11-26 11:48:18,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:48:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3531 transitions. [2023-11-26 11:48:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 11:48:18,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:18,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:18,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:48:18,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:18,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1473044886, now seen corresponding path program 1 times [2023-11-26 11:48:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:18,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458488939] [2023-11-26 11:48:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:18,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458488939] [2023-11-26 11:48:18,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458488939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:18,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:18,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:48:18,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942183308] [2023-11-26 11:48:18,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:18,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:18,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:18,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:18,608 INFO L87 Difference]: Start difference. First operand 2382 states and 3531 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:19,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:19,285 INFO L93 Difference]: Finished difference Result 4781 states and 7089 transitions. [2023-11-26 11:48:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:19,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2023-11-26 11:48:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:19,309 INFO L225 Difference]: With dead ends: 4781 [2023-11-26 11:48:19,309 INFO L226 Difference]: Without dead ends: 2400 [2023-11-26 11:48:19,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:48:19,324 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 12 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:19,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1941 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:48:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2023-11-26 11:48:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2384. [2023-11-26 11:48:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2384 states, 1645 states have (on average 1.4522796352583587) internal successors, (2389), 1702 states have internal predecessors, (2389), 575 states have call successors, (575), 164 states have call predecessors, (575), 163 states have return successors, (569), 549 states have call predecessors, (569), 569 states have call successors, (569) [2023-11-26 11:48:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2384 states to 2384 states and 3533 transitions. [2023-11-26 11:48:19,510 INFO L78 Accepts]: Start accepts. Automaton has 2384 states and 3533 transitions. Word has length 26 [2023-11-26 11:48:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:19,510 INFO L495 AbstractCegarLoop]: Abstraction has 2384 states and 3533 transitions. [2023-11-26 11:48:19,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2384 states and 3533 transitions. [2023-11-26 11:48:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 11:48:19,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:19,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:19,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:48:19,513 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:19,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1255827621, now seen corresponding path program 1 times [2023-11-26 11:48:19,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:19,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871362776] [2023-11-26 11:48:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:19,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:19,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:19,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871362776] [2023-11-26 11:48:19,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871362776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:19,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125388544] [2023-11-26 11:48:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:19,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:19,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:19,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:19,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:48:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:20,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:48:20,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:20,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:48:20,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125388544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:20,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:20,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-26 11:48:20,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118731668] [2023-11-26 11:48:20,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:20,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:20,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:20,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:20,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:20,531 INFO L87 Difference]: Start difference. First operand 2384 states and 3533 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:20,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:20,969 INFO L93 Difference]: Finished difference Result 4797 states and 7115 transitions. [2023-11-26 11:48:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:20,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-11-26 11:48:20,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:21,002 INFO L225 Difference]: With dead ends: 4797 [2023-11-26 11:48:21,002 INFO L226 Difference]: Without dead ends: 2414 [2023-11-26 11:48:21,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:21,017 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 13 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:21,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1950 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:48:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2023-11-26 11:48:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2388. [2023-11-26 11:48:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 1649 states have (on average 1.451182534869618) internal successors, (2393), 1706 states have internal predecessors, (2393), 575 states have call successors, (575), 164 states have call predecessors, (575), 163 states have return successors, (569), 549 states have call predecessors, (569), 569 states have call successors, (569) [2023-11-26 11:48:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3537 transitions. [2023-11-26 11:48:21,188 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3537 transitions. Word has length 29 [2023-11-26 11:48:21,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:21,188 INFO L495 AbstractCegarLoop]: Abstraction has 2388 states and 3537 transitions. [2023-11-26 11:48:21,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3537 transitions. [2023-11-26 11:48:21,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 11:48:21,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:21,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:21,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:21,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:21,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:21,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash 718451361, now seen corresponding path program 1 times [2023-11-26 11:48:21,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:21,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907932107] [2023-11-26 11:48:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:21,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:48:21,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907932107] [2023-11-26 11:48:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907932107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302451110] [2023-11-26 11:48:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:21,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:21,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:21,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:21,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:48:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:22,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:22,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:48:22,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302451110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:22,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:22,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-26 11:48:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236274569] [2023-11-26 11:48:22,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:22,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:22,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:22,470 INFO L87 Difference]: Start difference. First operand 2388 states and 3537 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:23,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:23,056 INFO L93 Difference]: Finished difference Result 7116 states and 10535 transitions. [2023-11-26 11:48:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:23,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2023-11-26 11:48:23,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:23,131 INFO L225 Difference]: With dead ends: 7116 [2023-11-26 11:48:23,132 INFO L226 Difference]: Without dead ends: 4729 [2023-11-26 11:48:23,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:23,147 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 1025 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:23,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 2116 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:48:23,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2023-11-26 11:48:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 3670. [2023-11-26 11:48:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 2551 states have (on average 1.4504116032928263) internal successors, (3700), 2634 states have internal predecessors, (3700), 869 states have call successors, (869), 250 states have call predecessors, (869), 249 states have return successors, (863), 833 states have call predecessors, (863), 863 states have call successors, (863) [2023-11-26 11:48:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 5432 transitions. [2023-11-26 11:48:23,430 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 5432 transitions. Word has length 32 [2023-11-26 11:48:23,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:23,430 INFO L495 AbstractCegarLoop]: Abstraction has 3670 states and 5432 transitions. [2023-11-26 11:48:23,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:48:23,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 5432 transitions. [2023-11-26 11:48:23,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-26 11:48:23,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:23,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:23,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:23,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:48:23,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:23,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash 894455850, now seen corresponding path program 1 times [2023-11-26 11:48:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:23,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078816411] [2023-11-26 11:48:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:23,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:48:23,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:23,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078816411] [2023-11-26 11:48:23,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078816411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:23,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123488231] [2023-11-26 11:48:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:23,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:23,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:23,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:23,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:48:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:24,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:24,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:48:24,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:24,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123488231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:24,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:24,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-26 11:48:24,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566322111] [2023-11-26 11:48:24,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:24,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:24,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:24,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:24,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:24,624 INFO L87 Difference]: Start difference. First operand 3670 states and 5432 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:48:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:25,041 INFO L93 Difference]: Finished difference Result 7371 states and 10915 transitions. [2023-11-26 11:48:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:25,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-26 11:48:25,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:25,076 INFO L225 Difference]: With dead ends: 7371 [2023-11-26 11:48:25,076 INFO L226 Difference]: Without dead ends: 3702 [2023-11-26 11:48:25,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:25,097 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 25 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:25,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1923 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2023-11-26 11:48:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3698. [2023-11-26 11:48:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 2573 states have (on average 1.4504469490866692) internal successors, (3732), 2656 states have internal predecessors, (3732), 875 states have call successors, (875), 250 states have call predecessors, (875), 249 states have return successors, (869), 839 states have call predecessors, (869), 869 states have call successors, (869) [2023-11-26 11:48:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5476 transitions. [2023-11-26 11:48:25,420 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5476 transitions. Word has length 33 [2023-11-26 11:48:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:25,420 INFO L495 AbstractCegarLoop]: Abstraction has 3698 states and 5476 transitions. [2023-11-26 11:48:25,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:48:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5476 transitions. [2023-11-26 11:48:25,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 11:48:25,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:25,425 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:25,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:25,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:25,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:25,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:25,645 INFO L85 PathProgramCache]: Analyzing trace with hash -597482214, now seen corresponding path program 1 times [2023-11-26 11:48:25,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:25,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239658990] [2023-11-26 11:48:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:48:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:48:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:48:25,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239658990] [2023-11-26 11:48:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239658990] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156726805] [2023-11-26 11:48:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:25,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:25,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:25,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:25,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:48:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:26,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:26,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:26,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:26,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156726805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:26,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:26,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-26 11:48:26,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859736706] [2023-11-26 11:48:26,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:26,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:26,583 INFO L87 Difference]: Start difference. First operand 3698 states and 5476 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:48:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:26,928 INFO L93 Difference]: Finished difference Result 3720 states and 5502 transitions. [2023-11-26 11:48:26,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:26,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2023-11-26 11:48:26,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:26,963 INFO L225 Difference]: With dead ends: 3720 [2023-11-26 11:48:26,963 INFO L226 Difference]: Without dead ends: 3709 [2023-11-26 11:48:26,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:26,968 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 1052 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:26,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 999 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2023-11-26 11:48:27,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3698. [2023-11-26 11:48:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 2573 states have (on average 1.450058297706957) internal successors, (3731), 2656 states have internal predecessors, (3731), 875 states have call successors, (875), 250 states have call predecessors, (875), 249 states have return successors, (869), 839 states have call predecessors, (869), 869 states have call successors, (869) [2023-11-26 11:48:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 5475 transitions. [2023-11-26 11:48:27,308 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 5475 transitions. Word has length 43 [2023-11-26 11:48:27,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:27,310 INFO L495 AbstractCegarLoop]: Abstraction has 3698 states and 5475 transitions. [2023-11-26 11:48:27,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:48:27,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 5475 transitions. [2023-11-26 11:48:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 11:48:27,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:27,315 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:27,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:27,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:27,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:27,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:27,526 INFO L85 PathProgramCache]: Analyzing trace with hash -540223912, now seen corresponding path program 1 times [2023-11-26 11:48:27,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:27,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993165433] [2023-11-26 11:48:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:27,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:27,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:48:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:27,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:48:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:48:27,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:27,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993165433] [2023-11-26 11:48:27,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993165433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:27,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82897648] [2023-11-26 11:48:27,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:27,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:27,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:27,760 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:27,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:48:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:28,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:28,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:28,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:28,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82897648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:28,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:28,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-26 11:48:28,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787769048] [2023-11-26 11:48:28,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:28,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:28,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:28,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:28,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:28,490 INFO L87 Difference]: Start difference. First operand 3698 states and 5475 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:48:28,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:28,874 INFO L93 Difference]: Finished difference Result 3700 states and 5476 transitions. [2023-11-26 11:48:28,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:28,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2023-11-26 11:48:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:28,924 INFO L225 Difference]: With dead ends: 3700 [2023-11-26 11:48:28,925 INFO L226 Difference]: Without dead ends: 3697 [2023-11-26 11:48:28,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:28,930 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 1016 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:28,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 971 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:48:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2023-11-26 11:48:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3697. [2023-11-26 11:48:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 2573 states have (on average 1.4496696463272445) internal successors, (3730), 2655 states have internal predecessors, (3730), 874 states have call successors, (874), 250 states have call predecessors, (874), 249 states have return successors, (869), 839 states have call predecessors, (869), 869 states have call successors, (869) [2023-11-26 11:48:29,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5473 transitions. [2023-11-26 11:48:29,205 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5473 transitions. Word has length 43 [2023-11-26 11:48:29,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:29,208 INFO L495 AbstractCegarLoop]: Abstraction has 3697 states and 5473 transitions. [2023-11-26 11:48:29,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:48:29,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5473 transitions. [2023-11-26 11:48:29,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-26 11:48:29,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:29,212 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:29,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:29,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:29,426 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:29,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:29,427 INFO L85 PathProgramCache]: Analyzing trace with hash 432588293, now seen corresponding path program 1 times [2023-11-26 11:48:29,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:29,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757895893] [2023-11-26 11:48:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:29,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:29,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:29,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:48:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:29,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:48:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:48:29,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:29,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757895893] [2023-11-26 11:48:29,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757895893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:29,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779245145] [2023-11-26 11:48:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:29,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:29,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:29,641 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:29,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:48:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:30,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:30,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:30,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:30,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779245145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:30,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:30,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-26 11:48:30,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630474143] [2023-11-26 11:48:30,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:30,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:30,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:30,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:30,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:30,372 INFO L87 Difference]: Start difference. First operand 3697 states and 5473 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:48:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:30,760 INFO L93 Difference]: Finished difference Result 3699 states and 5474 transitions. [2023-11-26 11:48:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:30,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2023-11-26 11:48:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:30,782 INFO L225 Difference]: With dead ends: 3699 [2023-11-26 11:48:30,782 INFO L226 Difference]: Without dead ends: 3696 [2023-11-26 11:48:30,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:30,786 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 1013 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:30,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 969 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:30,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2023-11-26 11:48:31,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 3696. [2023-11-26 11:48:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3696 states, 2573 states have (on average 1.449280994947532) internal successors, (3729), 2654 states have internal predecessors, (3729), 873 states have call successors, (873), 250 states have call predecessors, (873), 249 states have return successors, (869), 839 states have call predecessors, (869), 869 states have call successors, (869) [2023-11-26 11:48:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3696 states to 3696 states and 5471 transitions. [2023-11-26 11:48:31,073 INFO L78 Accepts]: Start accepts. Automaton has 3696 states and 5471 transitions. Word has length 44 [2023-11-26 11:48:31,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:31,073 INFO L495 AbstractCegarLoop]: Abstraction has 3696 states and 5471 transitions. [2023-11-26 11:48:31,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:48:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3696 states and 5471 transitions. [2023-11-26 11:48:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-26 11:48:31,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:31,077 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:31,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:31,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:48:31,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:31,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:31,287 INFO L85 PathProgramCache]: Analyzing trace with hash 525000443, now seen corresponding path program 1 times [2023-11-26 11:48:31,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:31,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953628711] [2023-11-26 11:48:31,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:31,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:31,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:48:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:31,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:48:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:48:31,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953628711] [2023-11-26 11:48:31,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953628711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755537806] [2023-11-26 11:48:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:31,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:31,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:31,543 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:31,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:48:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:32,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:32,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:32,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:32,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755537806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:32,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:32,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-26 11:48:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667606669] [2023-11-26 11:48:32,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:32,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:32,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:32,325 INFO L87 Difference]: Start difference. First operand 3696 states and 5471 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:48:32,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:32,695 INFO L93 Difference]: Finished difference Result 3698 states and 5472 transitions. [2023-11-26 11:48:32,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:32,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2023-11-26 11:48:32,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:32,716 INFO L225 Difference]: With dead ends: 3698 [2023-11-26 11:48:32,716 INFO L226 Difference]: Without dead ends: 3695 [2023-11-26 11:48:32,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:32,720 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 1010 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:32,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 967 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2023-11-26 11:48:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 3695. [2023-11-26 11:48:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3695 states, 2573 states have (on average 1.4488923435678196) internal successors, (3728), 2653 states have internal predecessors, (3728), 872 states have call successors, (872), 250 states have call predecessors, (872), 249 states have return successors, (869), 839 states have call predecessors, (869), 869 states have call successors, (869) [2023-11-26 11:48:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 5469 transitions. [2023-11-26 11:48:33,052 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 5469 transitions. Word has length 45 [2023-11-26 11:48:33,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:33,052 INFO L495 AbstractCegarLoop]: Abstraction has 3695 states and 5469 transitions. [2023-11-26 11:48:33,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:48:33,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 5469 transitions. [2023-11-26 11:48:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-26 11:48:33,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:33,056 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:33,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:33,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 11:48:33,265 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:33,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:33,266 INFO L85 PathProgramCache]: Analyzing trace with hash -905185336, now seen corresponding path program 1 times [2023-11-26 11:48:33,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:33,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260658070] [2023-11-26 11:48:33,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:33,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:48:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:48:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:48:33,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:33,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260658070] [2023-11-26 11:48:33,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260658070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:33,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90646683] [2023-11-26 11:48:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:33,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:33,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:33,464 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:33,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:48:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:34,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:34,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:34,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90646683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:34,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:34,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-26 11:48:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3413348] [2023-11-26 11:48:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:34,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:34,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:34,212 INFO L87 Difference]: Start difference. First operand 3695 states and 5469 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:48:34,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:34,600 INFO L93 Difference]: Finished difference Result 3697 states and 5470 transitions. [2023-11-26 11:48:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:34,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2023-11-26 11:48:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:34,618 INFO L225 Difference]: With dead ends: 3697 [2023-11-26 11:48:34,618 INFO L226 Difference]: Without dead ends: 3673 [2023-11-26 11:48:34,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:34,622 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 982 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:34,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 978 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:48:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2023-11-26 11:48:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3673. [2023-11-26 11:48:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 2559 states have (on average 1.4470496287612349) internal successors, (3703), 2637 states have internal predecessors, (3703), 867 states have call successors, (867), 247 states have call predecessors, (867), 246 states have return successors, (866), 836 states have call predecessors, (866), 866 states have call successors, (866) [2023-11-26 11:48:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 5436 transitions. [2023-11-26 11:48:35,052 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 5436 transitions. Word has length 46 [2023-11-26 11:48:35,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:35,053 INFO L495 AbstractCegarLoop]: Abstraction has 3673 states and 5436 transitions. [2023-11-26 11:48:35,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:48:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 5436 transitions. [2023-11-26 11:48:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:48:35,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:35,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:35,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:35,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:48:35,269 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:35,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash 117521155, now seen corresponding path program 1 times [2023-11-26 11:48:35,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:35,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390007779] [2023-11-26 11:48:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:35,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:48:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:48:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:35,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 11:48:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:35,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 11:48:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:48:35,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:35,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390007779] [2023-11-26 11:48:35,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390007779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:35,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745145486] [2023-11-26 11:48:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:35,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:35,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:35,497 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:35,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:48:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:36,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:48:36,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:48:36,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:36,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745145486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:36,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:36,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-26 11:48:36,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556297933] [2023-11-26 11:48:36,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:36,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:48:36,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:48:36,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:48:36,194 INFO L87 Difference]: Start difference. First operand 3673 states and 5436 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:48:36,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:36,920 INFO L93 Difference]: Finished difference Result 9200 states and 13604 transitions. [2023-11-26 11:48:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:48:36,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2023-11-26 11:48:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:36,945 INFO L225 Difference]: With dead ends: 9200 [2023-11-26 11:48:36,946 INFO L226 Difference]: Without dead ends: 5528 [2023-11-26 11:48:36,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:48:36,964 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 995 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:36,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1852 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:48:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5528 states. [2023-11-26 11:48:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5528 to 5525. [2023-11-26 11:48:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5525 states, 3858 states have (on average 1.447122861586314) internal successors, (5583), 3975 states have internal predecessors, (5583), 1288 states have call successors, (1288), 379 states have call predecessors, (1288), 378 states have return successors, (1287), 1242 states have call predecessors, (1287), 1287 states have call successors, (1287) [2023-11-26 11:48:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 8158 transitions. [2023-11-26 11:48:37,432 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 8158 transitions. Word has length 61 [2023-11-26 11:48:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:37,434 INFO L495 AbstractCegarLoop]: Abstraction has 5525 states and 8158 transitions. [2023-11-26 11:48:37,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:48:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 8158 transitions. [2023-11-26 11:48:37,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:48:37,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:37,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:37,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:37,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:48:37,651 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:37,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:37,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1253401664, now seen corresponding path program 1 times [2023-11-26 11:48:37,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:37,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509203501] [2023-11-26 11:48:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:37,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:48:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:48:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:48:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:48:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 11:48:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:48:37,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:37,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509203501] [2023-11-26 11:48:37,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509203501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:37,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035338601] [2023-11-26 11:48:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:37,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:37,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:37,897 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:37,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ddc8d1-ef57-42ce-bff0-12bd281ef9d4/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:48:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:38,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:48:38,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:48:38,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:48:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:48:38,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035338601] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:48:38,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:48:38,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-26 11:48:38,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375511847] [2023-11-26 11:48:38,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:48:38,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:48:38,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:38,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:48:38,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:48:38,695 INFO L87 Difference]: Start difference. First operand 5525 states and 8158 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-26 11:48:42,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []