./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--pt.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ --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 3b154baf348652a9aadd484f41053a90df6581eb3d7346fd488d4cc05040e74b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:25:20,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:25:20,892 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 22:25:20,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:25:20,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:25:20,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:25:20,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:25:20,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:25:20,927 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:25:20,928 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:25:20,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:25:20,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:25:20,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:25:20,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:25:20,932 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:25:20,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:25:20,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:25:20,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:25:20,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:25:20,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:25:20,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:25:20,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:25:20,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:25:20,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:25:20,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:25:20,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:25:20,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:25:20,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:25:20,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:25:20,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:25:20,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:25:20,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:25:20,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:25:20,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:25:20,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:25:20,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:25:20,946 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:25:20,946 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:25:20,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:25:20,947 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_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b154baf348652a9aadd484f41053a90df6581eb3d7346fd488d4cc05040e74b [2023-11-23 22:25:21,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:25:21,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:25:21,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:25:21,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:25:21,316 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:25:21,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2023-11-23 22:25:24,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:25:25,073 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:25:25,074 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2023-11-23 22:25:25,106 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/data/9c0a9406a/63c90c4de53949eba22c695f97c35ad6/FLAG03cccc438 [2023-11-23 22:25:25,127 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/data/9c0a9406a/63c90c4de53949eba22c695f97c35ad6 [2023-11-23 22:25:25,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:25:25,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:25:25,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:25:25,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:25:25,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:25:25,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:25:25" (1/1) ... [2023-11-23 22:25:25,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95669bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:25, skipping insertion in model container [2023-11-23 22:25:25,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:25:25" (1/1) ... [2023-11-23 22:25:25,271 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:25:26,461 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_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i[119285,119298] [2023-11-23 22:25:26,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:25:26,659 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:25:26,747 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)); [2827] [2023-11-23 22:25:26,750 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; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [2834-2835] [2023-11-23 22:25:26,876 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_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i[119285,119298] [2023-11-23 22:25:26,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:25:26,931 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:25:26,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26 WrapperNode [2023-11-23 22:25:26,932 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:25:26,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:25:26,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:25:26,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:25:26,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,141 INFO L138 Inliner]: procedures = 144, calls = 819, calls flagged for inlining = 50, calls inlined = 42, statements flattened = 1710 [2023-11-23 22:25:27,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:25:27,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:25:27,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:25:27,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:25:27,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,165 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,355 INFO L189 HeapSplitter]: Split 395 memory accesses to 20 slices as follows [2, 5, 29, 1, 1, 22, 216, 11, 5, 1, 3, 0, 11, 3, 31, 2, 13, 6, 6, 27] [2023-11-23 22:25:27,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,356 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,527 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:25:27,585 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:25:27,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:25:27,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:25:27,586 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (1/1) ... [2023-11-23 22:25:27,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:25:27,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:25:27,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:25:27,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:25:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2023-11-23 22:25:27,659 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2023-11-23 22:25:27,659 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2023-11-23 22:25:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2023-11-23 22:25:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2023-11-23 22:25:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2023-11-23 22:25:27,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pt_mutex [2023-11-23 22:25:27,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pt_mutex [2023-11-23 22:25:27,662 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2023-11-23 22:25:27,663 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2023-11-23 22:25:27,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:25:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:25:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:25:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:25:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:25:27,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 22:25:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 22:25:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 22:25:27,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 22:25:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-23 22:25:27,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-23 22:25:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-23 22:25:27,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-23 22:25:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-23 22:25:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-23 22:25:27,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-23 22:25:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2023-11-23 22:25:27,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2023-11-23 22:25:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2023-11-23 22:25:27,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#19 [2023-11-23 22:25:27,671 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_block [2023-11-23 22:25:27,671 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_block [2023-11-23 22:25:27,671 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2023-11-23 22:25:27,671 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2023-11-23 22:25:27,671 INFO L130 BoogieDeclarations]: Found specification of procedure pt_media_access_cmd [2023-11-23 22:25:27,672 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_media_access_cmd [2023-11-23 22:25:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-23 22:25:27,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-23 22:25:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure pt_reset [2023-11-23 22:25:27,672 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_reset [2023-11-23 22:25:27,672 INFO L130 BoogieDeclarations]: Found specification of procedure pt_identify [2023-11-23 22:25:27,673 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_identify [2023-11-23 22:25:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure pt_command [2023-11-23 22:25:27,673 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_command [2023-11-23 22:25:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:25:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:25:27,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:25:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:25:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:25:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 22:25:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 22:25:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 22:25:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 22:25:27,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-23 22:25:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-23 22:25:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-23 22:25:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-23 22:25:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-23 22:25:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-23 22:25:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-23 22:25:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2023-11-23 22:25:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2023-11-23 22:25:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#18 [2023-11-23 22:25:27,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#19 [2023-11-23 22:25:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 22:25:27,679 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 22:25:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write [2023-11-23 22:25:27,679 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write [2023-11-23 22:25:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 22:25:27,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 22:25:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 22:25:27,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 22:25:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure pt_atapi [2023-11-23 22:25:27,681 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_atapi [2023-11-23 22:25:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:25:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure pt_poll_dsc [2023-11-23 22:25:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_poll_dsc [2023-11-23 22:25:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_pt_mutex [2023-11-23 22:25:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_pt_mutex [2023-11-23 22:25:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 22:25:27,682 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 22:25:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure pt_req_sense [2023-11-23 22:25:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_req_sense [2023-11-23 22:25:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-23 22:25:27,683 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-23 22:25:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:25:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_17 [2023-11-23 22:25:27,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_17 [2023-11-23 22:25:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-11-23 22:25:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-11-23 22:25:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-23 22:25:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-23 22:25:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 22:25:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 22:25:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 22:25:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 22:25:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 22:25:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 22:25:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 22:25:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 22:25:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 22:25:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-23 22:25:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-11-23 22:25:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-11-23 22:25:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-11-23 22:25:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-11-23 22:25:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-11-23 22:25:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2023-11-23 22:25:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#16 [2023-11-23 22:25:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#17 [2023-11-23 22:25:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#18 [2023-11-23 22:25:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#19 [2023-11-23 22:25:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:25:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2023-11-23 22:25:27,690 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2023-11-23 22:25:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure pt_completion [2023-11-23 22:25:27,690 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_completion [2023-11-23 22:25:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 22:25:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 22:25:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 22:25:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 22:25:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 22:25:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 22:25:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 22:25:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 22:25:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 22:25:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-23 22:25:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-11-23 22:25:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-11-23 22:25:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-11-23 22:25:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-11-23 22:25:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-11-23 22:25:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2023-11-23 22:25:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#16 [2023-11-23 22:25:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#17 [2023-11-23 22:25:27,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#18 [2023-11-23 22:25:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#19 [2023-11-23 22:25:27,695 INFO L130 BoogieDeclarations]: Found specification of procedure pt_sleep [2023-11-23 22:25:27,696 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_sleep [2023-11-23 22:25:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure pt_write_fm [2023-11-23 22:25:27,696 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_write_fm [2023-11-23 22:25:27,696 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2023-11-23 22:25:27,696 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2023-11-23 22:25:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2023-11-23 22:25:27,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2023-11-23 22:25:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:25:27,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 22:25:27,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 22:25:27,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 22:25:27,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 22:25:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 22:25:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 22:25:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 22:25:27,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 22:25:27,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 22:25:27,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-23 22:25:27,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-11-23 22:25:27,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-11-23 22:25:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-11-23 22:25:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-11-23 22:25:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-11-23 22:25:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2023-11-23 22:25:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#16 [2023-11-23 22:25:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#17 [2023-11-23 22:25:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#18 [2023-11-23 22:25:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#19 [2023-11-23 22:25:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2023-11-23 22:25:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2023-11-23 22:25:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2023-11-23 22:25:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2023-11-23 22:25:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-23 22:25:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-23 22:25:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 22:25:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 22:25:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure pt_wait [2023-11-23 22:25:27,716 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_wait [2023-11-23 22:25:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2023-11-23 22:25:27,716 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2023-11-23 22:25:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2023-11-23 22:25:27,716 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2023-11-23 22:25:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure pt_probe [2023-11-23 22:25:27,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_probe [2023-11-23 22:25:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:25:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:25:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:25:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:25:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:25:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 22:25:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 22:25:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 22:25:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 22:25:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-23 22:25:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-23 22:25:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-23 22:25:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-23 22:25:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-23 22:25:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-23 22:25:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-23 22:25:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-23 22:25:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-23 22:25:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-23 22:25:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-23 22:25:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure pt_rewind [2023-11-23 22:25:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pt_rewind [2023-11-23 22:25:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2023-11-23 22:25:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2023-11-23 22:25:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure xn [2023-11-23 22:25:27,721 INFO L138 BoogieDeclarations]: Found implementation of procedure xn [2023-11-23 22:25:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-23 22:25:27,721 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-23 22:25:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:25:27,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:25:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2023-11-23 22:25:27,722 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2023-11-23 22:25:28,190 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:25:28,194 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:25:35,917 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:25:36,050 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:25:36,051 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 22:25:36,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:25:36 BoogieIcfgContainer [2023-11-23 22:25:36,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:25:36,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:25:36,055 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:25:36,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:25:36,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:25:25" (1/3) ... [2023-11-23 22:25:36,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799e7ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:25:36, skipping insertion in model container [2023-11-23 22:25:36,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:25:26" (2/3) ... [2023-11-23 22:25:36,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799e7ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:25:36, skipping insertion in model container [2023-11-23 22:25:36,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:25:36" (3/3) ... [2023-11-23 22:25:36,062 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--block--paride--pt.ko-main.cil.out.i [2023-11-23 22:25:36,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:25:36,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:25:36,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:25:36,163 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;@5bede52e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:25:36,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:25:36,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 747 states, 514 states have (on average 1.482490272373541) internal successors, (762), 535 states have internal predecessors, (762), 191 states have call successors, (191), 44 states have call predecessors, (191), 44 states have return successors, (191), 191 states have call predecessors, (191), 191 states have call successors, (191) [2023-11-23 22:25:36,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 22:25:36,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:25:36,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:25:36,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:25:36,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:25:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash 67436831, now seen corresponding path program 1 times [2023-11-23 22:25:36,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:25:36,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16875019] [2023-11-23 22:25:36,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:25:36,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:25:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 22:25:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:25:36,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:25:36,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16875019] [2023-11-23 22:25:36,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16875019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:25:36,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:25:36,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:25:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551084482] [2023-11-23 22:25:36,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:25:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:25:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:25:36,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:25:36,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:25:36,909 INFO L87 Difference]: Start difference. First operand has 747 states, 514 states have (on average 1.482490272373541) internal successors, (762), 535 states have internal predecessors, (762), 191 states have call successors, (191), 44 states have call predecessors, (191), 44 states have return successors, (191), 191 states have call predecessors, (191), 191 states have call successors, (191) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:25:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:25:38,207 INFO L93 Difference]: Finished difference Result 1824 states and 2849 transitions. [2023-11-23 22:25:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:25:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-23 22:25:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:25:38,234 INFO L225 Difference]: With dead ends: 1824 [2023-11-23 22:25:38,234 INFO L226 Difference]: Without dead ends: 1074 [2023-11-23 22:25:38,247 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 [2023-11-23 22:25:38,251 INFO L413 NwaCegarLoop]: 1325 mSDtfsCounter, 507 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:25:38,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 2336 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 22:25:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-11-23 22:25:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1048. [2023-11-23 22:25:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 714 states have (on average 1.4551820728291316) internal successors, (1039), 735 states have internal predecessors, (1039), 266 states have call successors, (266), 68 states have call predecessors, (266), 67 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2023-11-23 22:25:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1565 transitions. [2023-11-23 22:25:38,464 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1565 transitions. Word has length 16 [2023-11-23 22:25:38,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:25:38,465 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1565 transitions. [2023-11-23 22:25:38,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:25:38,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1565 transitions. [2023-11-23 22:25:38,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 22:25:38,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:25:38,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:25:38,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:25:38,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:25:38,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:25:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1225153245, now seen corresponding path program 1 times [2023-11-23 22:25:38,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:25:38,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745527427] [2023-11-23 22:25:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:25:38,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:25:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:25:38,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:25:38,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745527427] [2023-11-23 22:25:38,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745527427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:25:38,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:25:38,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:25:38,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259458258] [2023-11-23 22:25:38,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:25:38,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:25:38,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:25:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:25:38,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:25:38,643 INFO L87 Difference]: Start difference. First operand 1048 states and 1565 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) [2023-11-23 22:25:39,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:25:39,027 INFO L93 Difference]: Finished difference Result 2095 states and 3129 transitions. [2023-11-23 22:25:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:25:39,028 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 [2023-11-23 22:25:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:25:39,050 INFO L225 Difference]: With dead ends: 2095 [2023-11-23 22:25:39,050 INFO L226 Difference]: Without dead ends: 1048 [2023-11-23 22:25:39,056 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 [2023-11-23 22:25:39,057 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 1094 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:25:39,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1036 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:25:39,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-11-23 22:25:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1048. [2023-11-23 22:25:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 714 states have (on average 1.4523809523809523) internal successors, (1037), 735 states have internal predecessors, (1037), 266 states have call successors, (266), 68 states have call predecessors, (266), 67 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2023-11-23 22:25:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1563 transitions. [2023-11-23 22:25:39,184 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1563 transitions. Word has length 16 [2023-11-23 22:25:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:25:39,185 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1563 transitions. [2023-11-23 22:25:39,185 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) [2023-11-23 22:25:39,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1563 transitions. [2023-11-23 22:25:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 22:25:39,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:25:39,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:25:39,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:25:39,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:25:39,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:25:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash -647652429, now seen corresponding path program 1 times [2023-11-23 22:25:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:25:39,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525319170] [2023-11-23 22:25:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:25:39,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:25:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 22:25:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:25:39,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:25:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525319170] [2023-11-23 22:25:39,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525319170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:25:39,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:25:39,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:25:39,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951976933] [2023-11-23 22:25:39,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:25:39,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:25:39,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:25:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:25:39,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:25:39,435 INFO L87 Difference]: Start difference. First operand 1048 states and 1563 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-23 22:25:45,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 22:25:47,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 22:25:49,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 22:25:56,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 22:25:57,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:25:57,950 INFO L93 Difference]: Finished difference Result 2691 states and 4022 transitions. [2023-11-23 22:25:57,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:25:57,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 17 [2023-11-23 22:25:57,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:25:57,965 INFO L225 Difference]: With dead ends: 2691 [2023-11-23 22:25:57,965 INFO L226 Difference]: Without dead ends: 1644 [2023-11-23 22:25:57,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:25:57,972 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 1281 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 343 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:25:57,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 1473 Invalid, 2374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [343 Valid, 2028 Invalid, 3 Unknown, 0 Unchecked, 18.2s Time] [2023-11-23 22:25:57,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2023-11-23 22:25:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1640. [2023-11-23 22:25:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1125 states have (on average 1.456888888888889) internal successors, (1639), 1154 states have internal predecessors, (1639), 409 states have call successors, (409), 106 states have call predecessors, (409), 105 states have return successors, (403), 403 states have call predecessors, (403), 403 states have call successors, (403) [2023-11-23 22:25:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2451 transitions. [2023-11-23 22:25:58,102 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2451 transitions. Word has length 17 [2023-11-23 22:25:58,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:25:58,102 INFO L495 AbstractCegarLoop]: Abstraction has 1640 states and 2451 transitions. [2023-11-23 22:25:58,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-23 22:25:58,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2451 transitions. [2023-11-23 22:25:58,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 22:25:58,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:25:58,109 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] [2023-11-23 22:25:58,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:25:58,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:25:58,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:25:58,110 INFO L85 PathProgramCache]: Analyzing trace with hash 131881993, now seen corresponding path program 1 times [2023-11-23 22:25:58,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:25:58,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205968927] [2023-11-23 22:25:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:25:58,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:25:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:58,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:25:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:25:58,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:25:58,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205968927] [2023-11-23 22:25:58,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205968927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:25:58,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:25:58,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:25:58,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851286596] [2023-11-23 22:25:58,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:25:58,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:25:58,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:25:58,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:25:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:25:58,316 INFO L87 Difference]: Start difference. First operand 1640 states and 2451 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-23 22:25:59,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:25:59,077 INFO L93 Difference]: Finished difference Result 3303 states and 4941 transitions. [2023-11-23 22:25:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:25:59,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 25 [2023-11-23 22:25:59,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:25:59,092 INFO L225 Difference]: With dead ends: 3303 [2023-11-23 22:25:59,092 INFO L226 Difference]: Without dead ends: 1664 [2023-11-23 22:25:59,100 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 [2023-11-23 22:25:59,101 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 12 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:25:59,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2064 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 22:25:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2023-11-23 22:25:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1642. [2023-11-23 22:25:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1127 states have (on average 1.456078083407276) internal successors, (1641), 1156 states have internal predecessors, (1641), 409 states have call successors, (409), 106 states have call predecessors, (409), 105 states have return successors, (403), 403 states have call predecessors, (403), 403 states have call successors, (403) [2023-11-23 22:25:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2453 transitions. [2023-11-23 22:25:59,220 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2453 transitions. Word has length 25 [2023-11-23 22:25:59,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:25:59,221 INFO L495 AbstractCegarLoop]: Abstraction has 1642 states and 2453 transitions. [2023-11-23 22:25:59,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-23 22:25:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2453 transitions. [2023-11-23 22:25:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 22:25:59,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:25:59,224 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] [2023-11-23 22:25:59,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:25:59,225 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:25:59,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:25:59,225 INFO L85 PathProgramCache]: Analyzing trace with hash 870471179, now seen corresponding path program 1 times [2023-11-23 22:25:59,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:25:59,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361782279] [2023-11-23 22:25:59,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:25:59,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:25:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:59,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:25:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:25:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:25:59,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:25:59,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361782279] [2023-11-23 22:25:59,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361782279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:25:59,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:25:59,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:25:59,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382887753] [2023-11-23 22:25:59,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:25:59,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:25:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:25:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:25:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:25:59,430 INFO L87 Difference]: Start difference. First operand 1642 states and 2453 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) [2023-11-23 22:26:00,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:26:00,335 INFO L93 Difference]: Finished difference Result 3301 states and 4935 transitions. [2023-11-23 22:26:00,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:26:00,336 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 [2023-11-23 22:26:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:26:00,352 INFO L225 Difference]: With dead ends: 3301 [2023-11-23 22:26:00,352 INFO L226 Difference]: Without dead ends: 1660 [2023-11-23 22:26:00,359 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 [2023-11-23 22:26:00,360 INFO L413 NwaCegarLoop]: 1041 mSDtfsCounter, 12 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:26:00,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2062 Invalid, 138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 22:26:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2023-11-23 22:26:00,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1652. [2023-11-23 22:26:00,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1137 states have (on average 1.457343887423043) internal successors, (1657), 1166 states have internal predecessors, (1657), 409 states have call successors, (409), 106 states have call predecessors, (409), 105 states have return successors, (403), 403 states have call predecessors, (403), 403 states have call successors, (403) [2023-11-23 22:26:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2469 transitions. [2023-11-23 22:26:00,469 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2469 transitions. Word has length 29 [2023-11-23 22:26:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:26:00,470 INFO L495 AbstractCegarLoop]: Abstraction has 1652 states and 2469 transitions. [2023-11-23 22:26:00,470 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) [2023-11-23 22:26:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2469 transitions. [2023-11-23 22:26:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 22:26:00,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:26:00,472 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, 1] [2023-11-23 22:26:00,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:26:00,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:26:00,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:00,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1469895323, now seen corresponding path program 1 times [2023-11-23 22:26:00,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:00,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40516452] [2023-11-23 22:26:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:00,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:26:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 22:26:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:26:00,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:00,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40516452] [2023-11-23 22:26:00,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40516452] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:26:00,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313839867] [2023-11-23 22:26:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:00,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:26:00,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:26:00,745 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:26:00,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:26:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:01,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:26:01,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:26:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:26:01,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:26:01,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313839867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:01,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:26:01,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 22:26:01,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591009471] [2023-11-23 22:26:01,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:01,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:26:01,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:01,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:26:01,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:01,397 INFO L87 Difference]: Start difference. First operand 1652 states and 2469 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, (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) [2023-11-23 22:26:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:26:02,104 INFO L93 Difference]: Finished difference Result 3349 states and 5013 transitions. [2023-11-23 22:26:02,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:26:02,105 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, (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 34 [2023-11-23 22:26:02,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:26:02,120 INFO L225 Difference]: With dead ends: 3349 [2023-11-23 22:26:02,121 INFO L226 Difference]: Without dead ends: 1698 [2023-11-23 22:26:02,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:02,131 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 15 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:26:02,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2074 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 22:26:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2023-11-23 22:26:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1696. [2023-11-23 22:26:02,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1169 states have (on average 1.4585115483319075) internal successors, (1705), 1198 states have internal predecessors, (1705), 421 states have call successors, (421), 106 states have call predecessors, (421), 105 states have return successors, (415), 415 states have call predecessors, (415), 415 states have call successors, (415) [2023-11-23 22:26:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2541 transitions. [2023-11-23 22:26:02,261 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2541 transitions. Word has length 34 [2023-11-23 22:26:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:26:02,262 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2541 transitions. [2023-11-23 22:26:02,262 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, (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) [2023-11-23 22:26:02,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2541 transitions. [2023-11-23 22:26:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 22:26:02,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:26:02,267 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] [2023-11-23 22:26:02,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:26:02,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 22:26:02,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:26:02,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:02,481 INFO L85 PathProgramCache]: Analyzing trace with hash -359435343, now seen corresponding path program 1 times [2023-11-23 22:26:02,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:02,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650995486] [2023-11-23 22:26:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:02,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:26:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 22:26:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 22:26:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:26:02,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:02,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650995486] [2023-11-23 22:26:02,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650995486] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:26:02,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421517509] [2023-11-23 22:26:02,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:02,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:26:02,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:26:02,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:26:02,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:26:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:03,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:26:03,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:26:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:26:03,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:26:03,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421517509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:03,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:26:03,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 22:26:03,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011416876] [2023-11-23 22:26:03,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:03,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:26:03,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:03,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:26:03,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:03,453 INFO L87 Difference]: Start difference. First operand 1696 states and 2541 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-23 22:26:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:26:03,848 INFO L93 Difference]: Finished difference Result 1718 states and 2567 transitions. [2023-11-23 22:26:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:26:03,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 38 [2023-11-23 22:26:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:26:03,863 INFO L225 Difference]: With dead ends: 1718 [2023-11-23 22:26:03,864 INFO L226 Difference]: Without dead ends: 1707 [2023-11-23 22:26:03,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:03,866 INFO L413 NwaCegarLoop]: 1049 mSDtfsCounter, 1097 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:26:03,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 1062 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:26:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2023-11-23 22:26:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1696. [2023-11-23 22:26:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1169 states have (on average 1.4568006843455945) internal successors, (1703), 1198 states have internal predecessors, (1703), 421 states have call successors, (421), 106 states have call predecessors, (421), 105 states have return successors, (415), 415 states have call predecessors, (415), 415 states have call successors, (415) [2023-11-23 22:26:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2539 transitions. [2023-11-23 22:26:04,010 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2539 transitions. Word has length 38 [2023-11-23 22:26:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:26:04,010 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2539 transitions. [2023-11-23 22:26:04,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-23 22:26:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2539 transitions. [2023-11-23 22:26:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 22:26:04,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:26:04,012 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] [2023-11-23 22:26:04,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:26:04,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-23 22:26:04,224 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:26:04,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:04,225 INFO L85 PathProgramCache]: Analyzing trace with hash -302177041, now seen corresponding path program 1 times [2023-11-23 22:26:04,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:04,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507434785] [2023-11-23 22:26:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:04,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:04,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:26:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:04,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 22:26:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:04,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 22:26:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:26:04,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:04,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507434785] [2023-11-23 22:26:04,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507434785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:26:04,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955971299] [2023-11-23 22:26:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:04,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:26:04,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:26:04,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:26:04,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:26:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:05,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:26:05,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:26:05,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:26:05,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:26:05,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955971299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:05,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:26:05,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 22:26:05,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242330842] [2023-11-23 22:26:05,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:05,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:26:05,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:05,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:26:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:05,183 INFO L87 Difference]: Start difference. First operand 1696 states and 2539 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2023-11-23 22:26:05,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:26:05,616 INFO L93 Difference]: Finished difference Result 1698 states and 2540 transitions. [2023-11-23 22:26:05,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:26:05,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 38 [2023-11-23 22:26:05,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:26:05,631 INFO L225 Difference]: With dead ends: 1698 [2023-11-23 22:26:05,631 INFO L226 Difference]: Without dead ends: 1695 [2023-11-23 22:26:05,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:05,635 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 1066 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:26:05,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1034 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:26:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2023-11-23 22:26:05,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1695. [2023-11-23 22:26:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1169 states have (on average 1.4559452523524379) internal successors, (1702), 1197 states have internal predecessors, (1702), 420 states have call successors, (420), 106 states have call predecessors, (420), 105 states have return successors, (415), 415 states have call predecessors, (415), 415 states have call successors, (415) [2023-11-23 22:26:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2537 transitions. [2023-11-23 22:26:05,802 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2537 transitions. Word has length 38 [2023-11-23 22:26:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:26:05,803 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2537 transitions. [2023-11-23 22:26:05,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2023-11-23 22:26:05,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2537 transitions. [2023-11-23 22:26:05,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 22:26:05,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:26:05,805 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] [2023-11-23 22:26:05,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:26:06,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 22:26:06,024 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:26:06,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:06,025 INFO L85 PathProgramCache]: Analyzing trace with hash -777967046, now seen corresponding path program 1 times [2023-11-23 22:26:06,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:06,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063384029] [2023-11-23 22:26:06,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:06,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:26:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 22:26:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 22:26:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:26:06,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:06,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063384029] [2023-11-23 22:26:06,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063384029] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:26:06,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835996373] [2023-11-23 22:26:06,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:06,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:26:06,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:26:06,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:26:06,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:26:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:06,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:26:06,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:26:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:26:07,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:26:07,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835996373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:07,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:26:07,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 22:26:07,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917127330] [2023-11-23 22:26:07,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:07,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:26:07,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:26:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:07,004 INFO L87 Difference]: Start difference. First operand 1695 states and 2537 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2023-11-23 22:26:07,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:26:07,424 INFO L93 Difference]: Finished difference Result 1697 states and 2538 transitions. [2023-11-23 22:26:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:26:07,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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 39 [2023-11-23 22:26:07,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:26:07,438 INFO L225 Difference]: With dead ends: 1697 [2023-11-23 22:26:07,439 INFO L226 Difference]: Without dead ends: 1694 [2023-11-23 22:26:07,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:07,442 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 1063 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:26:07,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1032 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:26:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2023-11-23 22:26:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1694. [2023-11-23 22:26:07,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1169 states have (on average 1.4550898203592815) internal successors, (1701), 1196 states have internal predecessors, (1701), 419 states have call successors, (419), 106 states have call predecessors, (419), 105 states have return successors, (415), 415 states have call predecessors, (415), 415 states have call successors, (415) [2023-11-23 22:26:07,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2535 transitions. [2023-11-23 22:26:07,623 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2535 transitions. Word has length 39 [2023-11-23 22:26:07,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:26:07,623 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 2535 transitions. [2023-11-23 22:26:07,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 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) [2023-11-23 22:26:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2535 transitions. [2023-11-23 22:26:07,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 22:26:07,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:26:07,625 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] [2023-11-23 22:26:07,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:26:07,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:26:07,840 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:26:07,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:07,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1652416850, now seen corresponding path program 1 times [2023-11-23 22:26:07,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:07,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809645728] [2023-11-23 22:26:07,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:26:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:08,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 22:26:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:08,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 22:26:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:26:08,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:08,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809645728] [2023-11-23 22:26:08,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809645728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:26:08,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251319393] [2023-11-23 22:26:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:08,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:26:08,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:26:08,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:26:08,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:26:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:08,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:26:08,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:26:08,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:26:08,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:26:08,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251319393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:08,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:26:08,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 22:26:08,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402698340] [2023-11-23 22:26:08,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:08,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:26:08,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:08,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:26:08,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:08,720 INFO L87 Difference]: Start difference. First operand 1694 states and 2535 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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) [2023-11-23 22:26:09,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:26:09,172 INFO L93 Difference]: Finished difference Result 1696 states and 2536 transitions. [2023-11-23 22:26:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:26:09,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 40 [2023-11-23 22:26:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:26:09,189 INFO L225 Difference]: With dead ends: 1696 [2023-11-23 22:26:09,190 INFO L226 Difference]: Without dead ends: 1693 [2023-11-23 22:26:09,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:09,192 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 1060 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:26:09,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1030 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:26:09,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2023-11-23 22:26:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1693. [2023-11-23 22:26:09,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1169 states have (on average 1.4542343883661248) internal successors, (1700), 1195 states have internal predecessors, (1700), 418 states have call successors, (418), 106 states have call predecessors, (418), 105 states have return successors, (415), 415 states have call predecessors, (415), 415 states have call successors, (415) [2023-11-23 22:26:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2533 transitions. [2023-11-23 22:26:09,387 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2533 transitions. Word has length 40 [2023-11-23 22:26:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:26:09,388 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2533 transitions. [2023-11-23 22:26:09,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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) [2023-11-23 22:26:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2533 transitions. [2023-11-23 22:26:09,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-23 22:26:09,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:26:09,390 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] [2023-11-23 22:26:09,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:26:09,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 22:26:09,603 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:26:09,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash -315088835, now seen corresponding path program 1 times [2023-11-23 22:26:09,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:09,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323858630] [2023-11-23 22:26:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:09,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:26:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:09,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 22:26:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:09,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 22:26:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:26:09,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:09,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323858630] [2023-11-23 22:26:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323858630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:26:09,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982898853] [2023-11-23 22:26:09,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:09,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:26:09,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:26:09,850 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:26:09,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:26:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:10,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:26:10,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:26:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:26:10,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:26:10,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982898853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:26:10,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:26:10,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 22:26:10,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120809927] [2023-11-23 22:26:10,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:26:10,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:26:10,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:26:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:26:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:10,518 INFO L87 Difference]: Start difference. First operand 1693 states and 2533 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, (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) [2023-11-23 22:26:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:26:11,126 INFO L93 Difference]: Finished difference Result 2162 states and 3179 transitions. [2023-11-23 22:26:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:26:11,127 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, (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 41 [2023-11-23 22:26:11,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:26:11,144 INFO L225 Difference]: With dead ends: 2162 [2023-11-23 22:26:11,144 INFO L226 Difference]: Without dead ends: 2129 [2023-11-23 22:26:11,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:26:11,147 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 974 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:26:11,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1593 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 22:26:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2023-11-23 22:26:11,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 2129. [2023-11-23 22:26:11,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 1440 states have (on average 1.43125) internal successors, (2061), 1475 states have internal predecessors, (2061), 536 states have call successors, (536), 153 states have call predecessors, (536), 152 states have return successors, (535), 535 states have call predecessors, (535), 535 states have call successors, (535) [2023-11-23 22:26:11,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 3132 transitions. [2023-11-23 22:26:11,348 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 3132 transitions. Word has length 41 [2023-11-23 22:26:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:26:11,348 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 3132 transitions. [2023-11-23 22:26:11,348 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, (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) [2023-11-23 22:26:11,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 3132 transitions. [2023-11-23 22:26:11,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 22:26:11,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:26:11,353 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:26:11,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:26:11,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:26:11,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:26:11,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:26:11,577 INFO L85 PathProgramCache]: Analyzing trace with hash -271992136, now seen corresponding path program 1 times [2023-11-23 22:26:11,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:26:11,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592665955] [2023-11-23 22:26:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:11,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:26:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 22:26:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 22:26:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:11,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 22:26:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:11,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 22:26:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:11,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 22:26:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:11,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 22:26:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 22:26:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:26:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 22:26:11,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:26:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592665955] [2023-11-23 22:26:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592665955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:26:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137871545] [2023-11-23 22:26:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:26:11,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:26:11,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:26:11,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:26:11,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3aa277b5-f33c-457b-a7d1-1c8a43f46a68/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process