./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/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_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/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_ec2a2220-90ca-4de1-a422-4625988b3f72/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 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:44:51,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:44:51,504 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:44:51,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:44:51,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:44:51,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:44:51,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:44:51,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:44:51,558 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:44:51,563 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:44:51,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:44:51,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:44:51,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:44:51,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:44:51,566 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:44:51,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:44:51,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:44:51,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:44:51,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:44:51,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:44:51,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:44:51,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:44:51,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:44:51,570 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:44:51,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:44:51,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:44:51,572 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:44:51,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:44:51,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:51,573 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:44:51,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:44:51,574 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:44:51,574 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:44:51,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:44:51,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:44:51,575 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:44:51,575 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:44:51,576 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:44:51,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:44:51,576 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_ec2a2220-90ca-4de1-a422-4625988b3f72/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 [2023-11-26 11:44:51,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:44:51,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:44:51,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:44:51,913 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:44:51,914 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:44:51,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2023-11-26 11:44:55,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:44:55,674 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:44:55,675 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2023-11-26 11:44:55,719 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme/data/79b0daccd/0fde2947653a4b48aaae71ccc4c33446/FLAG70a082390 [2023-11-26 11:44:55,736 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme/data/79b0daccd/0fde2947653a4b48aaae71ccc4c33446 [2023-11-26 11:44:55,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:44:55,741 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:44:55,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:55,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:44:55,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:44:55,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:55" (1/1) ... [2023-11-26 11:44:55,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622226a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:55, skipping insertion in model container [2023-11-26 11:44:55,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:55" (1/1) ... [2023-11-26 11:44:55,872 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:44:57,047 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_ec2a2220-90ca-4de1-a422-4625988b3f72/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2023-11-26 11:44:57,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:57,680 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:44:57,821 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [5402] [2023-11-26 11:44:57,825 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5440] [2023-11-26 11:44:57,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5447] [2023-11-26 11:44:57,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %2,%1\n\tsbb %0,%0": "=r" (oldbit), "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5455-5456] [2023-11-26 11:44:57,828 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [5484] [2023-11-26 11:44:57,829 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [5491] [2023-11-26 11:44:57,838 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_ec2a2220-90ca-4de1-a422-4625988b3f72/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2023-11-26 11:44:57,953 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/6228/dscv_tempdir/dscv/ri/144_2a/drivers/net/can/usb/usb_8dev.o.c.prepared"), "i" (621), "i" (12UL)); [6324-6325] [2023-11-26 11:44:58,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:58,178 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:44:58,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58 WrapperNode [2023-11-26 11:44:58,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:58,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:58,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:44:58,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:44:58,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:58,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:58,400 INFO L138 Inliner]: procedures = 175, calls = 824, calls flagged for inlining = 87, calls inlined = 87, statements flattened = 2564 [2023-11-26 11:44:58,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:58,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:44:58,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:44:58,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:44:58,416 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:58,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:58,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:58,866 INFO L175 MemorySlicer]: Split 455 memory accesses to 8 slices as follows [2, 31, 31, 5, 1, 42, 334, 9]. 73 percent of accesses are in the largest equivalence class. The 124 initializations are split as follows [2, 0, 0, 0, 0, 42, 80, 0]. The 144 writes are split as follows [0, 0, 18, 1, 0, 0, 125, 0]. [2023-11-26 11:44:58,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:58,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:58,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:59,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:59,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:59,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:59,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:44:59,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:44:59,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:44:59,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:44:59,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (1/1) ... [2023-11-26 11:44:59,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:59,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:59,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:59,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec2a2220-90ca-4de1-a422-4625988b3f72/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:44:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2023-11-26 11:44:59,189 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2023-11-26 11:44:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-11-26 11:44:59,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-11-26 11:44:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2023-11-26 11:44:59,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2023-11-26 11:44:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_15 [2023-11-26 11:44:59,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_15 [2023-11-26 11:44:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-26 11:44:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-26 11:44:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-26 11:44:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-26 11:44:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-26 11:44:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-26 11:44:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-26 11:44:59,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-26 11:44:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2023-11-26 11:44:59,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2023-11-26 11:44:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-26 11:44:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-26 11:44:59,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-26 11:44:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-26 11:44:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-26 11:44:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-26 11:44:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-26 11:44:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2023-11-26 11:44:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-26 11:44:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-26 11:44:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-26 11:44:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-26 11:44:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-26 11:44:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-26 11:44:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-26 11:44:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-26 11:44:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2023-11-26 11:44:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2023-11-26 11:44:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-26 11:44:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-26 11:44:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:44:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:44:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:44:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:44:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:44:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:44:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:44:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:44:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2023-11-26 11:44:59,200 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2023-11-26 11:44:59,200 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2023-11-26 11:44:59,200 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2023-11-26 11:44:59,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-26 11:44:59,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-26 11:44:59,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-26 11:44:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-26 11:44:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-26 11:44:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-26 11:44:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-26 11:44:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-26 11:44:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-26 11:44:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2023-11-26 11:44:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-26 11:44:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-26 11:44:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-26 11:44:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-26 11:44:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-26 11:44:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-26 11:44:59,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-26 11:44:59,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2023-11-26 11:44:59,206 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-26 11:44:59,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-26 11:44:59,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-26 11:44:59,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-26 11:44:59,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-26 11:44:59,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-26 11:44:59,207 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_read_bulk_callback [2023-11-26 11:44:59,207 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_read_bulk_callback [2023-11-26 11:44:59,208 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-11-26 11:44:59,208 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-11-26 11:44:59,208 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-11-26 11:44:59,208 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-11-26 11:44:59,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:44:59,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:44:59,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:44:59,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:44:59,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:44:59,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:44:59,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:44:59,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:44:59,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-26 11:44:59,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-26 11:44:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-26 11:44:59,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-26 11:44:59,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 11:44:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 11:44:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 11:44:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-26 11:44:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-26 11:44:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2023-11-26 11:44:59,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2023-11-26 11:44:59,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2023-11-26 11:44:59,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 11:44:59,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 11:44:59,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 11:44:59,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-26 11:44:59,213 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-26 11:44:59,214 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2023-11-26 11:44:59,214 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2023-11-26 11:44:59,215 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2023-11-26 11:44:59,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:44:59,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:44:59,215 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-26 11:44:59,215 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-26 11:44:59,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:44:59,216 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-26 11:44:59,217 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-26 11:44:59,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-26 11:44:59,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-26 11:44:59,217 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2023-11-26 11:44:59,217 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2023-11-26 11:44:59,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:44:59,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-26 11:44:59,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-26 11:44:59,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:44:59,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:44:59,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:44:59,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:44:59,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:44:59,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:44:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:44:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:44:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 11:44:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-26 11:44:59,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-26 11:44:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-26 11:44:59,280 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-26 11:44:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-26 11:44:59,281 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-26 11:44:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:44:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:44:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:44:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:44:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:44:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:44:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:44:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 11:44:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2023-11-26 11:44:59,282 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2023-11-26 11:44:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2023-11-26 11:44:59,282 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2023-11-26 11:44:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-26 11:44:59,282 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-26 11:44:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2023-11-26 11:44:59,282 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2023-11-26 11:44:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:44:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:44:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:44:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:44:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:44:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:44:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:44:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:44:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-26 11:44:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_disconnect [2023-11-26 11:44:59,283 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_disconnect [2023-11-26 11:44:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-26 11:44:59,284 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-26 11:44:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2023-11-26 11:44:59,284 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2023-11-26 11:44:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-26 11:44:59,284 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-26 11:44:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-26 11:44:59,284 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-26 11:44:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-26 11:44:59,285 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-26 11:44:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-26 11:44:59,285 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-26 11:44:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-26 11:44:59,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-26 11:44:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2023-11-26 11:44:59,285 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2023-11-26 11:44:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:44:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:44:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:44:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:44:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:44:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:44:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:44:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:44:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2023-11-26 11:44:59,286 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2023-11-26 11:44:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2023-11-26 11:44:59,286 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2023-11-26 11:44:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-26 11:44:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-26 11:44:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-26 11:44:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-26 11:44:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-26 11:44:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-26 11:44:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-26 11:44:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2023-11-26 11:44:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_send_cmd [2023-11-26 11:44:59,288 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_send_cmd [2023-11-26 11:44:59,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-26 11:44:59,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-26 11:44:59,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:44:59,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:44:59,288 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_cmd_open [2023-11-26 11:44:59,288 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_cmd_open [2023-11-26 11:44:59,947 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:44:59,952 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:00,064 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-26 11:45:01,369 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-26 11:45:05,729 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:05,974 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:05,974 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:45:05,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:05 BoogieIcfgContainer [2023-11-26 11:45:05,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:05,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:05,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:05,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:05,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:44:55" (1/3) ... [2023-11-26 11:45:05,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a524365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:05, skipping insertion in model container [2023-11-26 11:45:05,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:58" (2/3) ... [2023-11-26 11:45:05,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a524365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:05, skipping insertion in model container [2023-11-26 11:45:05,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:05" (3/3) ... [2023-11-26 11:45:05,990 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2023-11-26 11:45:06,014 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:06,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:45:06,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:06,142 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;@23b0bfc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:06,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:45:06,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 668 states, 466 states have (on average 1.4527896995708154) internal successors, (677), 485 states have internal predecessors, (677), 155 states have call successors, (155), 47 states have call predecessors, (155), 45 states have return successors, (149), 148 states have call predecessors, (149), 149 states have call successors, (149) [2023-11-26 11:45:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 11:45:06,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:06,171 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] [2023-11-26 11:45:06,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:06,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2005800907, now seen corresponding path program 1 times [2023-11-26 11:45:06,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:06,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093834659] [2023-11-26 11:45:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:06,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,150 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 11:45:07,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:07,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093834659] [2023-11-26 11:45:07,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093834659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:07,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:07,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:07,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166719508] [2023-11-26 11:45:07,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:07,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:07,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:07,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:07,199 INFO L87 Difference]: Start difference. First operand has 668 states, 466 states have (on average 1.4527896995708154) internal successors, (677), 485 states have internal predecessors, (677), 155 states have call successors, (155), 47 states have call predecessors, (155), 45 states have return successors, (149), 148 states have call predecessors, (149), 149 states have call successors, (149) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:13,489 INFO L93 Difference]: Finished difference Result 2081 states and 3153 transitions. [2023-11-26 11:45:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:13,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-26 11:45:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:13,529 INFO L225 Difference]: With dead ends: 2081 [2023-11-26 11:45:13,530 INFO L226 Difference]: Without dead ends: 1395 [2023-11-26 11:45:13,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:13,545 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1145 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:13,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 1820 Invalid, 1203 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [416 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-26 11:45:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2023-11-26 11:45:13,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1289. [2023-11-26 11:45:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 911 states have (on average 1.3841931942919867) internal successors, (1261), 929 states have internal predecessors, (1261), 289 states have call successors, (289), 89 states have call predecessors, (289), 88 states have return successors, (284), 282 states have call predecessors, (284), 284 states have call successors, (284) [2023-11-26 11:45:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1834 transitions. [2023-11-26 11:45:13,773 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1834 transitions. Word has length 23 [2023-11-26 11:45:13,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:13,774 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 1834 transitions. [2023-11-26 11:45:13,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:13,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1834 transitions. [2023-11-26 11:45:13,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 11:45:13,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:13,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:13,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:45:13,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:13,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:13,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1198409084, now seen corresponding path program 1 times [2023-11-26 11:45:13,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:13,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632367866] [2023-11-26 11:45:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:13,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:45:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:14,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:14,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632367866] [2023-11-26 11:45:14,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632367866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:14,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:14,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:14,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465907385] [2023-11-26 11:45:14,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:14,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:14,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:14,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:14,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:14,674 INFO L87 Difference]: Start difference. First operand 1289 states and 1834 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:20,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:20,360 INFO L93 Difference]: Finished difference Result 4068 states and 5901 transitions. [2023-11-26 11:45:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:20,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2023-11-26 11:45:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:20,393 INFO L225 Difference]: With dead ends: 4068 [2023-11-26 11:45:20,393 INFO L226 Difference]: Without dead ends: 2784 [2023-11-26 11:45:20,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:20,407 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 1048 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:20,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 2296 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-26 11:45:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2023-11-26 11:45:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2562. [2023-11-26 11:45:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 1814 states have (on average 1.3825799338478502) internal successors, (2508), 1846 states have internal predecessors, (2508), 571 states have call successors, (571), 177 states have call predecessors, (571), 176 states have return successors, (580), 562 states have call predecessors, (580), 566 states have call successors, (580) [2023-11-26 11:45:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 3659 transitions. [2023-11-26 11:45:20,653 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 3659 transitions. Word has length 32 [2023-11-26 11:45:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:20,654 INFO L495 AbstractCegarLoop]: Abstraction has 2562 states and 3659 transitions. [2023-11-26 11:45:20,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 3659 transitions. [2023-11-26 11:45:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-26 11:45:20,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:20,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:20,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:45:20,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:20,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:20,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1504436265, now seen corresponding path program 1 times [2023-11-26 11:45:20,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:20,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177302301] [2023-11-26 11:45:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:20,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:21,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:45:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:21,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:21,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177302301] [2023-11-26 11:45:21,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177302301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:21,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:21,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444419690] [2023-11-26 11:45:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:21,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:21,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:21,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:21,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:21,181 INFO L87 Difference]: Start difference. First operand 2562 states and 3659 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:26,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 11:45:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:26,638 INFO L93 Difference]: Finished difference Result 2776 states and 4050 transitions. [2023-11-26 11:45:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:26,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2023-11-26 11:45:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:26,665 INFO L225 Difference]: With dead ends: 2776 [2023-11-26 11:45:26,665 INFO L226 Difference]: Without dead ends: 2773 [2023-11-26 11:45:26,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:26,669 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 982 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:26,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1139 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-26 11:45:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2023-11-26 11:45:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2561. [2023-11-26 11:45:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2561 states, 1814 states have (on average 1.3820286659316428) internal successors, (2507), 1845 states have internal predecessors, (2507), 570 states have call successors, (570), 177 states have call predecessors, (570), 176 states have return successors, (580), 562 states have call predecessors, (580), 566 states have call successors, (580) [2023-11-26 11:45:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 3657 transitions. [2023-11-26 11:45:26,908 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 3657 transitions. Word has length 33 [2023-11-26 11:45:26,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:26,910 INFO L495 AbstractCegarLoop]: Abstraction has 2561 states and 3657 transitions. [2023-11-26 11:45:26,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:26,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 3657 transitions. [2023-11-26 11:45:26,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 11:45:26,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:26,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:26,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:45:26,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:26,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:26,917 INFO L85 PathProgramCache]: Analyzing trace with hash 606708703, now seen corresponding path program 1 times [2023-11-26 11:45:26,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:26,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025859151] [2023-11-26 11:45:26,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:26,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:27,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:27,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:45:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:27,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:27,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025859151] [2023-11-26 11:45:27,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025859151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:27,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:27,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:27,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399084622] [2023-11-26 11:45:27,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:27,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:27,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:27,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:27,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:27,267 INFO L87 Difference]: Start difference. First operand 2561 states and 3657 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:32,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 11:45:32,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:32,340 INFO L93 Difference]: Finished difference Result 2775 states and 4048 transitions. [2023-11-26 11:45:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:32,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2023-11-26 11:45:32,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:32,366 INFO L225 Difference]: With dead ends: 2775 [2023-11-26 11:45:32,366 INFO L226 Difference]: Without dead ends: 2772 [2023-11-26 11:45:32,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:32,370 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 985 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:32,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 1128 Invalid, 708 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [245 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-26 11:45:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2023-11-26 11:45:32,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2560. [2023-11-26 11:45:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 1814 states have (on average 1.3814773980154356) internal successors, (2506), 1844 states have internal predecessors, (2506), 569 states have call successors, (569), 177 states have call predecessors, (569), 176 states have return successors, (580), 562 states have call predecessors, (580), 566 states have call successors, (580) [2023-11-26 11:45:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 3655 transitions. [2023-11-26 11:45:32,619 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 3655 transitions. Word has length 34 [2023-11-26 11:45:32,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:32,620 INFO L495 AbstractCegarLoop]: Abstraction has 2560 states and 3655 transitions. [2023-11-26 11:45:32,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 3655 transitions. [2023-11-26 11:45:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-26 11:45:32,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:32,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:32,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:45:32,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:32,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:32,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1627698138, now seen corresponding path program 1 times [2023-11-26 11:45:32,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:32,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309150528] [2023-11-26 11:45:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:32,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:32,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:45:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:32,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:32,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309150528] [2023-11-26 11:45:32,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309150528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:32,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:32,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:32,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999841772] [2023-11-26 11:45:32,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:32,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:32,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:32,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:32,947 INFO L87 Difference]: Start difference. First operand 2560 states and 3655 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:37,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-26 11:45:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:38,251 INFO L93 Difference]: Finished difference Result 2774 states and 4046 transitions. [2023-11-26 11:45:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:38,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2023-11-26 11:45:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:38,276 INFO L225 Difference]: With dead ends: 2774 [2023-11-26 11:45:38,277 INFO L226 Difference]: Without dead ends: 2771 [2023-11-26 11:45:38,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:38,281 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 983 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:38,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 1123 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-26 11:45:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2023-11-26 11:45:38,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 2559. [2023-11-26 11:45:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 1814 states have (on average 1.3809261300992282) internal successors, (2505), 1843 states have internal predecessors, (2505), 568 states have call successors, (568), 177 states have call predecessors, (568), 176 states have return successors, (580), 562 states have call predecessors, (580), 566 states have call successors, (580) [2023-11-26 11:45:38,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3653 transitions. [2023-11-26 11:45:38,508 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3653 transitions. Word has length 35 [2023-11-26 11:45:38,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:38,509 INFO L495 AbstractCegarLoop]: Abstraction has 2559 states and 3653 transitions. [2023-11-26 11:45:38,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3653 transitions. [2023-11-26 11:45:38,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:45:38,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:38,511 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:38,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:45:38,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:38,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:38,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1081362878, now seen corresponding path program 1 times [2023-11-26 11:45:38,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:38,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325924575] [2023-11-26 11:45:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:38,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:38,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:45:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:38,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:45:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-26 11:45:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:38,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:38,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325924575] [2023-11-26 11:45:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325924575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:38,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:38,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:38,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886592201] [2023-11-26 11:45:38,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:38,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:38,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:38,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:38,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:38,801 INFO L87 Difference]: Start difference. First operand 2559 states and 3653 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3)