./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/discover_list.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/discover_list.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b98ece0168fde0a9f5db629b0589397995dd8e9526df8a73dd8042a19f16d948 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:01:44,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:01:44,711 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:01:44,716 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:01:44,716 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:01:44,738 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:01:44,739 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:01:44,739 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:01:44,740 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:01:44,740 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:01:44,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:01:44,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:01:44,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:01:44,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:01:44,743 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:01:44,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:01:44,745 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:01:44,745 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:01:44,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:01:44,746 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:01:44,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:01:44,747 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:01:44,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:01:44,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:01:44,749 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:01:44,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:01:44,750 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:01:44,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:01:44,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:01:44,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:01:44,751 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:01:44,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:01:44,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:01:44,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:01:44,753 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:01:44,753 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:01:44,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:01:44,753 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:01:44,753 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:01:44,754 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:01:44,754 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:01:44,754 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:01:44,754 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_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b98ece0168fde0a9f5db629b0589397995dd8e9526df8a73dd8042a19f16d948 [2023-11-29 03:01:44,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:01:44,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:01:44,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:01:44,991 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:01:44,991 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:01:44,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loops-crafted-1/discover_list.c [2023-11-29 03:01:47,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:01:47,959 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:01:47,959 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/sv-benchmarks/c/loops-crafted-1/discover_list.c [2023-11-29 03:01:47,970 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/data/0551449c5/1d2144763e3945709cfc7ad74447d468/FLAG08a418531 [2023-11-29 03:01:47,984 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/data/0551449c5/1d2144763e3945709cfc7ad74447d468 [2023-11-29 03:01:47,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:01:47,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:01:47,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:01:47,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:01:47,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:01:47,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:01:47" (1/1) ... [2023-11-29 03:01:47,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221a430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:47, skipping insertion in model container [2023-11-29 03:01:47,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:01:47" (1/1) ... [2023-11-29 03:01:48,036 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:01:48,187 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_c7116348-a9b8-4963-be1d-937de0e7f4b4/sv-benchmarks/c/loops-crafted-1/discover_list.c[4997,5010] [2023-11-29 03:01:48,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:01:48,306 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:01:48,330 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_c7116348-a9b8-4963-be1d-937de0e7f4b4/sv-benchmarks/c/loops-crafted-1/discover_list.c[4997,5010] [2023-11-29 03:01:48,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:01:48,408 WARN L675 CHandler]: The function smp_send_req is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:01:48,409 WARN L675 CHandler]: The function toupper is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:01:48,409 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 03:01:48,416 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:01:48,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48 WrapperNode [2023-11-29 03:01:48,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:01:48,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:01:48,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:01:48,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:01:48,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,483 INFO L138 Inliner]: procedures = 36, calls = 642, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 508 [2023-11-29 03:01:48,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:01:48,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:01:48,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:01:48,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:01:48,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,497 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,522 INFO L175 MemorySlicer]: Split 191 memory accesses to 10 slices as follows [2, 5, 41, 5, 5, 10, 4, 99, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 145 initializations are split as follows [2, 5, 32, 5, 5, 0, 0, 96, 0, 0]. The 15 writes are split as follows [0, 0, 6, 0, 0, 0, 1, 0, 0, 8]. [2023-11-29 03:01:48,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:01:48,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:01:48,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:01:48,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:01:48,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (1/1) ... [2023-11-29 03:01:48,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:01:48,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:01:48,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:01:48,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:01:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:01:48,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:01:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-29 03:01:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:01:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:01:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:01:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:01:48,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:01:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 03:01:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 03:01:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 03:01:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-29 03:01:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-29 03:01:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:01:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:01:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:01:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:01:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:01:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 03:01:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 03:01:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 03:01:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-29 03:01:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-29 03:01:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure smp_send_req [2023-11-29 03:01:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 03:01:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 03:01:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 03:01:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 03:01:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-29 03:01:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2023-11-29 03:01:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2023-11-29 03:01:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#7 [2023-11-29 03:01:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#8 [2023-11-29 03:01:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#9 [2023-11-29 03:01:48,650 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 03:01:48,650 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 03:01:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 03:01:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 03:01:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-29 03:01:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2023-11-29 03:01:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2023-11-29 03:01:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#7 [2023-11-29 03:01:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#8 [2023-11-29 03:01:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#9 [2023-11-29 03:01:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:01:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:01:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:01:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:01:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:01:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 03:01:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 03:01:48,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 03:01:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 03:01:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-29 03:01:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 03:01:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:01:48,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:01:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 03:01:48,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 03:01:48,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:01:48,796 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:01:48,798 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:01:49,246 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:01:49,334 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:01:49,334 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 03:01:49,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:01:49 BoogieIcfgContainer [2023-11-29 03:01:49,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:01:49,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:01:49,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:01:49,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:01:49,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:01:47" (1/3) ... [2023-11-29 03:01:49,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1819f6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:01:49, skipping insertion in model container [2023-11-29 03:01:49,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:01:48" (2/3) ... [2023-11-29 03:01:49,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1819f6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:01:49, skipping insertion in model container [2023-11-29 03:01:49,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:01:49" (3/3) ... [2023-11-29 03:01:49,343 INFO L112 eAbstractionObserver]: Analyzing ICFG discover_list.c [2023-11-29 03:01:49,361 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:01:49,362 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:01:49,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:01:49,414 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;@11bb927a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:01:49,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:01:49,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 61 states have (on average 1.5901639344262295) internal successors, (97), 62 states have internal predecessors, (97), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:01:49,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 03:01:49,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:01:49,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:01:49,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:01:49,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:01:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash -187442703, now seen corresponding path program 1 times [2023-11-29 03:01:49,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:01:49,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051764577] [2023-11-29 03:01:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:01:49,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:01:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:01:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 03:01:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:49,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:01:49,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:01:49,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051764577] [2023-11-29 03:01:49,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051764577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:01:49,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:01:49,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:01:49,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226183795] [2023-11-29 03:01:49,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:01:49,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:01:49,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:01:49,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:01:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:01:49,841 INFO L87 Difference]: Start difference. First operand has 74 states, 61 states have (on average 1.5901639344262295) internal successors, (97), 62 states have internal predecessors, (97), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:01:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:01:50,090 INFO L93 Difference]: Finished difference Result 207 states and 338 transitions. [2023-11-29 03:01:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:01:50,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 3 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 33 [2023-11-29 03:01:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:01:50,101 INFO L225 Difference]: With dead ends: 207 [2023-11-29 03:01:50,101 INFO L226 Difference]: Without dead ends: 116 [2023-11-29 03:01:50,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:01:50,107 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 100 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:01:50,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 385 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:01:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-29 03:01:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 65. [2023-11-29 03:01:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:01:50,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2023-11-29 03:01:50,147 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 33 [2023-11-29 03:01:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:01:50,147 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2023-11-29 03:01:50,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:01:50,148 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2023-11-29 03:01:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 03:01:50,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:01:50,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:01:50,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:01:50,150 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:01:50,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:01:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash -164810449, now seen corresponding path program 1 times [2023-11-29 03:01:50,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:01:50,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143798973] [2023-11-29 03:01:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:01:50,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:01:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:50,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:01:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-29 03:01:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:01:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:01:50,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143798973] [2023-11-29 03:01:50,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143798973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:01:50,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:01:50,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:01:50,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800346536] [2023-11-29 03:01:50,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:01:50,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:01:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:01:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:01:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:01:50,451 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:01:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:01:50,664 INFO L93 Difference]: Finished difference Result 118 states and 160 transitions. [2023-11-29 03:01:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:01:50,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-29 03:01:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:01:50,666 INFO L225 Difference]: With dead ends: 118 [2023-11-29 03:01:50,666 INFO L226 Difference]: Without dead ends: 68 [2023-11-29 03:01:50,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:01:50,668 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 25 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:01:50,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 302 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:01:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-29 03:01:50,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2023-11-29 03:01:50,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:01:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2023-11-29 03:01:50,679 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 33 [2023-11-29 03:01:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:01:50,679 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2023-11-29 03:01:50,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 03:01:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2023-11-29 03:01:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 03:01:50,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:01:50,681 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] [2023-11-29 03:01:50,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:01:50,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:01:50,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:01:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash 448226067, now seen corresponding path program 1 times [2023-11-29 03:01:50,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:01:50,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396874344] [2023-11-29 03:01:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:01:50,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:01:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:01:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:01:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:01:51,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:01:51,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396874344] [2023-11-29 03:01:51,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396874344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:01:51,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600549858] [2023-11-29 03:01:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:01:51,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:01:51,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:01:51,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:01:51,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:01:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:51,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:01:51,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:01:51,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:01:51,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:01:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:01:51,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600549858] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 03:01:51,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:01:51,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 12 [2023-11-29 03:01:51,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876630461] [2023-11-29 03:01:51,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:01:51,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:01:51,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:01:51,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:01:51,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:01:51,431 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:01:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:01:51,491 INFO L93 Difference]: Finished difference Result 98 states and 131 transitions. [2023-11-29 03:01:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:01:51,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2023-11-29 03:01:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:01:51,493 INFO L225 Difference]: With dead ends: 98 [2023-11-29 03:01:51,493 INFO L226 Difference]: Without dead ends: 67 [2023-11-29 03:01:51,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:01:51,495 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:01:51,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:01:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-29 03:01:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-29 03:01:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 55 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:01:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2023-11-29 03:01:51,503 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 34 [2023-11-29 03:01:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:01:51,503 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2023-11-29 03:01:51,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 03:01:51,504 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2023-11-29 03:01:51,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 03:01:51,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:01:51,505 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, 1] [2023-11-29 03:01:51,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:01:51,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:01:51,707 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:01:51,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:01:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 641328759, now seen corresponding path program 1 times [2023-11-29 03:01:51,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:01:51,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648456641] [2023-11-29 03:01:51,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:01:51,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:01:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:51,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:01:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:52,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 03:01:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:01:52,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:01:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648456641] [2023-11-29 03:01:52,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648456641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:01:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161084809] [2023-11-29 03:01:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:01:52,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:01:52,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:01:52,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:01:52,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:01:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:52,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:01:52,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:01:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:01:52,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:01:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:01:52,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161084809] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:01:52,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:01:52,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 13 [2023-11-29 03:01:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155605643] [2023-11-29 03:01:52,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:01:52,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:01:52,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:01:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:01:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:01:52,617 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 13 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:01:53,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:01:53,130 INFO L93 Difference]: Finished difference Result 124 states and 169 transitions. [2023-11-29 03:01:53,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:01:53,131 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2023-11-29 03:01:53,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:01:53,132 INFO L225 Difference]: With dead ends: 124 [2023-11-29 03:01:53,132 INFO L226 Difference]: Without dead ends: 71 [2023-11-29 03:01:53,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:01:53,134 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 30 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:01:53,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 615 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:01:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-29 03:01:53,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-29 03:01:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.305084745762712) internal successors, (77), 59 states have internal predecessors, (77), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:01:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2023-11-29 03:01:53,144 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 35 [2023-11-29 03:01:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:01:53,144 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2023-11-29 03:01:53,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:01:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2023-11-29 03:01:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 03:01:53,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:01:53,146 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-29 03:01:53,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:01:53,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:01:53,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:01:53,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:01:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1831631023, now seen corresponding path program 2 times [2023-11-29 03:01:53,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:01:53,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139332313] [2023-11-29 03:01:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:01:53,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:01:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:53,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:01:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 03:01:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:01:53,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:01:53,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139332313] [2023-11-29 03:01:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139332313] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:01:53,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031373468] [2023-11-29 03:01:53,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:01:53,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:01:53,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:01:53,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:01:53,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:01:54,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:01:54,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:01:54,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 03:01:54,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:01:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:01:54,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:01:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:01:54,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031373468] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:01:54,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:01:54,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2023-11-29 03:01:54,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844617292] [2023-11-29 03:01:54,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:01:54,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:01:54,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:01:54,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:01:54,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:01:54,733 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand has 15 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:01:55,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:01:55,144 INFO L93 Difference]: Finished difference Result 130 states and 173 transitions. [2023-11-29 03:01:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:01:55,145 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2023-11-29 03:01:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:01:55,146 INFO L225 Difference]: With dead ends: 130 [2023-11-29 03:01:55,146 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 03:01:55,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:01:55,148 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 31 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:01:55,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 427 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:01:55,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 03:01:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-29 03:01:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:01:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2023-11-29 03:01:55,158 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 39 [2023-11-29 03:01:55,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:01:55,159 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2023-11-29 03:01:55,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:01:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2023-11-29 03:01:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 03:01:55,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:01:55,160 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:01:55,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:01:55,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:01:55,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:01:55,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:01:55,368 INFO L85 PathProgramCache]: Analyzing trace with hash -227208785, now seen corresponding path program 3 times [2023-11-29 03:01:55,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:01:55,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750416671] [2023-11-29 03:01:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:01:55,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:01:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:01:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 03:01:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 03:01:55,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:01:55,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750416671] [2023-11-29 03:01:55,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750416671] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:01:55,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416760465] [2023-11-29 03:01:55,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:01:55,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:01:55,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:01:55,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:01:55,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:01:57,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 03:01:57,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:01:57,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:01:57,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:01:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 03:01:57,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:01:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 03:01:57,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416760465] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:01:57,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:01:57,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 24 [2023-11-29 03:01:57,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554920208] [2023-11-29 03:01:57,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:01:57,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 03:01:57,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:01:57,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:01:57,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:01:57,659 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 24 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:01:58,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:01:58,978 INFO L93 Difference]: Finished difference Result 138 states and 186 transitions. [2023-11-29 03:01:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 03:01:58,979 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2023-11-29 03:01:58,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:01:58,980 INFO L225 Difference]: With dead ends: 138 [2023-11-29 03:01:58,980 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 03:01:58,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=294, Invalid=1776, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 03:01:58,982 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 44 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:01:58,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 989 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:01:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 03:01:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-29 03:01:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 70 states have internal predecessors, (88), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:01:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2023-11-29 03:01:58,993 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 43 [2023-11-29 03:01:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:01:58,993 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2023-11-29 03:01:58,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 22 states have internal predecessors, (62), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:01:58,994 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2023-11-29 03:01:58,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 03:01:58,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:01:58,995 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:01:59,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:01:59,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 03:01:59,199 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:01:59,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:01:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash 605453331, now seen corresponding path program 4 times [2023-11-29 03:01:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:01:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345655049] [2023-11-29 03:01:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:01:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:01:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:59,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:01:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:59,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:01:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:01:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-29 03:01:59,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:01:59,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345655049] [2023-11-29 03:01:59,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345655049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:01:59,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139628391] [2023-11-29 03:01:59,803 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:01:59,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:01:59,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:01:59,808 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:01:59,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:02:00,295 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:02:00,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:02:00,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:02:00,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:02:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 03:02:00,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:02:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 03:02:00,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139628391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:02:00,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:02:00,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 37 [2023-11-29 03:02:00,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189389871] [2023-11-29 03:02:00,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:02:00,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 03:02:00,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:02:00,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 03:02:00,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1111, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 03:02:00,983 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand has 37 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 35 states have internal predecessors, (75), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:02:06,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:02:06,928 INFO L93 Difference]: Finished difference Result 157 states and 211 transitions. [2023-11-29 03:02:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 03:02:06,929 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 35 states have internal predecessors, (75), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2023-11-29 03:02:06,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:02:06,930 INFO L225 Difference]: With dead ends: 157 [2023-11-29 03:02:06,930 INFO L226 Difference]: Without dead ends: 95 [2023-11-29 03:02:06,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=775, Invalid=4195, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 03:02:06,933 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 63 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:02:06,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1238 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:02:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-29 03:02:06,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-29 03:02:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.216867469879518) internal successors, (101), 83 states have internal predecessors, (101), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:02:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2023-11-29 03:02:06,951 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 50 [2023-11-29 03:02:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:02:06,951 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2023-11-29 03:02:06,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 2.2058823529411766) internal successors, (75), 35 states have internal predecessors, (75), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:02:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2023-11-29 03:02:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 03:02:06,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:02:06,953 INFO L195 NwaCegarLoop]: trace histogram [22, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:02:06,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:02:07,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 03:02:07,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:02:07,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:02:07,154 INFO L85 PathProgramCache]: Analyzing trace with hash 317386671, now seen corresponding path program 5 times [2023-11-29 03:02:07,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:02:07,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915457833] [2023-11-29 03:02:07,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:02:07,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:02:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:02:07,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:02:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:02:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 03:02:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:02:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-29 03:02:08,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:02:08,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915457833] [2023-11-29 03:02:08,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915457833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:02:08,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794381582] [2023-11-29 03:02:08,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:02:08,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:02:08,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:02:08,016 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:02:08,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:06:12,132 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-11-29 03:06:12,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:06:12,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 03:06:12,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:06:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 03:06:12,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:06:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 03:06:16,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794381582] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:06:16,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:06:16,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 26, 26] total 62 [2023-11-29 03:06:16,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281367238] [2023-11-29 03:06:16,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:06:16,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 03:06:16,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:06:16,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 03:06:16,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=704, Invalid=3078, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 03:06:16,305 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand has 62 states, 59 states have (on average 1.694915254237288) internal successors, (100), 60 states have internal predecessors, (100), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:06:36,608 WARN L293 SmtUtils]: Spent 10.38s on a formula simplification. DAG size of input: 139 DAG size of output: 18 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:06:53,913 WARN L293 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 133 DAG size of output: 18 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:10:59,257 WARN L293 SmtUtils]: Spent 1.75m on a formula simplification. DAG size of input: 141 DAG size of output: 102 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 03:11:00,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 03:11:03,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 03:11:09,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 03:11:12,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 03:11:16,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 03:11:17,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:11:17,721 INFO L93 Difference]: Finished difference Result 194 states and 260 transitions. [2023-11-29 03:11:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-29 03:11:17,722 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 59 states have (on average 1.694915254237288) internal successors, (100), 60 states have internal predecessors, (100), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 63 [2023-11-29 03:11:17,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:11:17,723 INFO L225 Difference]: With dead ends: 194 [2023-11-29 03:11:17,723 INFO L226 Difference]: Without dead ends: 120 [2023-11-29 03:11:17,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1862 ImplicationChecksByTransitivity, 285.6s TimeCoverageRelationStatistics Valid=2668, Invalid=12092, Unknown=2, NotChecked=0, Total=14762 [2023-11-29 03:11:17,728 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 100 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:11:17,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 2292 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1852 Invalid, 1 Unknown, 0 Unchecked, 19.7s Time] [2023-11-29 03:11:17,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-29 03:11:17,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2023-11-29 03:11:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 108 states have (on average 1.1666666666666667) internal successors, (126), 108 states have internal predecessors, (126), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:11:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2023-11-29 03:11:17,744 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 63 [2023-11-29 03:11:17,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:11:17,744 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2023-11-29 03:11:17,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 59 states have (on average 1.694915254237288) internal successors, (100), 60 states have internal predecessors, (100), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:11:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2023-11-29 03:11:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 03:11:17,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:11:17,746 INFO L195 NwaCegarLoop]: trace histogram [46, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:17,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:11:17,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 03:11:17,947 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:11:17,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:17,947 INFO L85 PathProgramCache]: Analyzing trace with hash 477630611, now seen corresponding path program 6 times [2023-11-29 03:11:17,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:17,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564890222] [2023-11-29 03:11:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:17,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:11:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:18,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 03:11:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-29 03:11:18,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:18,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564890222] [2023-11-29 03:11:18,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564890222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:18,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777492906] [2023-11-29 03:11:18,874 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 03:11:18,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:18,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:18,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:18,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:12:28,309 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-29 03:12:28,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:12:28,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 03:12:28,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:12:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-29 03:12:28,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:12:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-29 03:12:28,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777492906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:12:28,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:12:28,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 37 [2023-11-29 03:12:28,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890665793] [2023-11-29 03:12:28,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:12:28,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 03:12:28,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:28,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 03:12:28,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1023, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 03:12:28,928 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand has 37 states, 34 states have (on average 2.088235294117647) internal successors, (71), 35 states have internal predecessors, (71), 3 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:12:32,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:12:32,698 INFO L93 Difference]: Finished difference Result 228 states and 278 transitions. [2023-11-29 03:12:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 03:12:32,698 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 2.088235294117647) internal successors, (71), 35 states have internal predecessors, (71), 3 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) Word has length 88 [2023-11-29 03:12:32,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:12:32,699 INFO L225 Difference]: With dead ends: 228 [2023-11-29 03:12:32,700 INFO L226 Difference]: Without dead ends: 131 [2023-11-29 03:12:32,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=756, Invalid=2784, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 03:12:32,702 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 103 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:12:32,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 958 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:12:32,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-29 03:12:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2023-11-29 03:12:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 119 states have (on average 1.1512605042016806) internal successors, (137), 119 states have internal predecessors, (137), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:12:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2023-11-29 03:12:32,716 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 88 [2023-11-29 03:12:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:12:32,716 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2023-11-29 03:12:32,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 2.088235294117647) internal successors, (71), 35 states have internal predecessors, (71), 3 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:12:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2023-11-29 03:12:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:12:32,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:12:32,718 INFO L195 NwaCegarLoop]: trace histogram [46, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:12:32,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 03:12:32,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:32,919 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:12:32,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:32,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1369768785, now seen corresponding path program 7 times [2023-11-29 03:12:32,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:32,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797102910] [2023-11-29 03:12:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:32,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:12:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:34,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 03:12:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-29 03:12:34,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797102910] [2023-11-29 03:12:34,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797102910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:12:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286850869] [2023-11-29 03:12:34,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 03:12:34,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:34,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:12:34,385 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:12:34,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:12:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:34,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 03:12:34,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:12:35,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 03:12:35,251 INFO L349 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2023-11-29 03:12:35,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:12:35,322 INFO L349 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2023-11-29 03:12:35,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:12:35,386 INFO L349 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2023-11-29 03:12:35,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:12:35,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:12:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 3 proven. 207 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-29 03:12:35,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:12:35,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-11-29 03:12:41,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-11-29 03:12:41,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 414 treesize of output 406 [2023-11-29 03:12:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 1 proven. 209 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-29 03:12:42,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286850869] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:12:42,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:12:42,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 25] total 71 [2023-11-29 03:12:42,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704410406] [2023-11-29 03:12:42,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:12:42,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-11-29 03:12:42,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:43,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-11-29 03:12:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=4735, Unknown=3, NotChecked=0, Total=4970 [2023-11-29 03:12:43,002 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand has 71 states, 70 states have (on average 1.6142857142857143) internal successors, (113), 69 states have internal predecessors, (113), 3 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:12:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:12:45,524 INFO L93 Difference]: Finished difference Result 229 states and 269 transitions. [2023-11-29 03:12:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 03:12:45,525 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.6142857142857143) internal successors, (113), 69 states have internal predecessors, (113), 3 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 99 [2023-11-29 03:12:45,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:12:45,526 INFO L225 Difference]: With dead ends: 229 [2023-11-29 03:12:45,526 INFO L226 Difference]: Without dead ends: 132 [2023-11-29 03:12:45,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1364 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=438, Invalid=8679, Unknown=3, NotChecked=0, Total=9120 [2023-11-29 03:12:45,531 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 141 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:12:45,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 2335 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:12:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-29 03:12:45,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2023-11-29 03:12:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 120 states have (on average 1.1416666666666666) internal successors, (137), 120 states have internal predecessors, (137), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:12:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2023-11-29 03:12:45,552 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 99 [2023-11-29 03:12:45,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:12:45,553 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2023-11-29 03:12:45,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 1.6142857142857143) internal successors, (113), 69 states have internal predecessors, (113), 3 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:12:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2023-11-29 03:12:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 03:12:45,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:12:45,554 INFO L195 NwaCegarLoop]: trace histogram [46, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:12:45,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:12:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:45,755 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:12:45,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -454683243, now seen corresponding path program 1 times [2023-11-29 03:12:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:45,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651635865] [2023-11-29 03:12:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:46,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:12:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:47,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 03:12:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-29 03:12:47,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:47,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651635865] [2023-11-29 03:12:47,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651635865] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:12:47,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776878660] [2023-11-29 03:12:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:47,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:47,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:12:47,345 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:12:47,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:12:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:47,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 03:12:47,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:12:48,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 03:12:48,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:12:48,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:12:48,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:12:48,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-29 03:12:48,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 03:12:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-29 03:12:48,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:12:49,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2023-11-29 03:12:49,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7734 treesize of output 7670 [2023-11-29 03:12:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-29 03:12:50,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776878660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:12:50,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:12:50,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 26] total 74 [2023-11-29 03:12:50,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889894192] [2023-11-29 03:12:50,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:12:50,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-11-29 03:12:50,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:50,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-11-29 03:12:50,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=5151, Unknown=0, NotChecked=0, Total=5402 [2023-11-29 03:12:50,614 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand has 74 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 72 states have internal predecessors, (114), 3 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:12:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:12:53,181 INFO L93 Difference]: Finished difference Result 144 states and 169 transitions. [2023-11-29 03:12:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 03:12:53,182 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 72 states have internal predecessors, (114), 3 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 100 [2023-11-29 03:12:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:12:53,182 INFO L225 Difference]: With dead ends: 144 [2023-11-29 03:12:53,182 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 03:12:53,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=510, Invalid=9996, Unknown=0, NotChecked=0, Total=10506 [2023-11-29 03:12:53,186 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 52 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:12:53,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 485 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 03:12:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 03:12:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 03:12:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 03:12:53,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2023-11-29 03:12:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:12:53,187 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:12:53,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 1.5616438356164384) internal successors, (114), 72 states have internal predecessors, (114), 3 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-29 03:12:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 03:12:53,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 03:12:53,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 03:12:53,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:12:53,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:53,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 03:12:53,800 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memset#5EXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,800 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,800 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,800 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,800 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memset#4EXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,800 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,800 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memset#7EXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,800 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,801 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,801 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memset#6EXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,801 INFO L895 garLoopResultBuilder]: At program point L-1-1(line -1) the Hoare annotation is: (let ((.cse1 (= |#Ultimate.C_memset#6_#value| (select (select |#memory_int#6| |#Ultimate.C_memset#6_#ptr.base|) (+ 16 |#Ultimate.C_memset#6_#ptr.offset|)))) (.cse0 (<= (+ (* (div |#Ultimate.C_memset#6_#amount| 4294967296) 4294967296) 1) |#Ultimate.C_memset#6_#amount|))) (or (and (= |#Ultimate.C_memset#6_#t~loopctr200| 4) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 6) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 18) .cse1 .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 7) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 3) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 14) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 13) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 12) .cse0) (and .cse1 (<= 19 |#Ultimate.C_memset#6_#t~loopctr200|)) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 9) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 15) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 11) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 5) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 1) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 10) .cse0) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 8) .cse0) (and .cse1 (= |#Ultimate.C_memset#6_#t~loopctr200| 17) .cse0) (and (<= 2 (mod |#Ultimate.C_memset#6_#amount| 4294967296)) (= |#Ultimate.C_memset#6_#t~loopctr200| 2)) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 0) (= |#memory_int#6| |old(#memory_int#6)|)) (and (= |#Ultimate.C_memset#6_#t~loopctr200| 16) .cse0))) [2023-11-29 03:12:53,801 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (= |#memory_int#6| |old(#memory_int#6)|) [2023-11-29 03:12:53,801 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,801 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memset#1EXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,801 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,801 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,801 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memset#0EXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memset#3EXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memset#2EXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L902 garLoopResultBuilder]: At program point L-1-1(line -1) the Hoare annotation is: true [2023-11-29 03:12:53,802 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memset#9EXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memset#8EXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point L432(lines 432 433) no Hoare annotation was computed. [2023-11-29 03:12:53,802 INFO L899 garLoopResultBuilder]: For program point L432-2(lines 432 433) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L201(line 201) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L895 garLoopResultBuilder]: At program point L218(line 218) the Hoare annotation is: false [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L441(lines 441 444) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 186) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L218-1(line 218) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L466(lines 466 467) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L433(line 433) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L433-2(line 433) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L433-4(line 433) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L895 garLoopResultBuilder]: At program point L202(line 202) the Hoare annotation is: false [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L202-1(line 202) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L450(line 450) no Hoare annotation was computed. [2023-11-29 03:12:53,803 INFO L895 garLoopResultBuilder]: At program point L194(line 194) the Hoare annotation is: false [2023-11-29 03:12:53,803 INFO L899 garLoopResultBuilder]: For program point L194-1(line 194) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point L450-2(lines 450 458) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point L450-3(lines 450 458) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 210) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point L426(lines 426 427) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point L203-2(lines 196 220) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point L426-2(lines 426 427) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point L484(lines 484 487) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point L162-1(lines 162 166) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point L195-2(lines 195 220) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L895 garLoopResultBuilder]: At program point L195-3(lines 195 220) the Hoare annotation is: false [2023-11-29 03:12:53,804 INFO L899 garLoopResultBuilder]: For program point L195-4(lines 195 220) no Hoare annotation was computed. [2023-11-29 03:12:53,804 INFO L895 garLoopResultBuilder]: At program point L162-4(lines 162 166) the Hoare annotation is: false [2023-11-29 03:12:53,805 INFO L899 garLoopResultBuilder]: For program point L162-5(lines 162 166) no Hoare annotation was computed. [2023-11-29 03:12:53,805 INFO L899 garLoopResultBuilder]: For program point L476(lines 476 479) no Hoare annotation was computed. [2023-11-29 03:12:53,805 INFO L895 garLoopResultBuilder]: At program point L187(line 187) the Hoare annotation is: false [2023-11-29 03:12:53,805 INFO L899 garLoopResultBuilder]: For program point L187-1(line 187) no Hoare annotation was computed. [2023-11-29 03:12:53,805 INFO L899 garLoopResultBuilder]: For program point L468(lines 468 469) no Hoare annotation was computed. [2023-11-29 03:12:53,805 INFO L895 garLoopResultBuilder]: At program point L435(line 435) the Hoare annotation is: (= |ULTIMATE.start_do_discover_list_~#smp_rr~0#1.offset| 0) [2023-11-29 03:12:53,805 INFO L899 garLoopResultBuilder]: For program point L435-1(line 435) no Hoare annotation was computed. [2023-11-29 03:12:53,805 INFO L899 garLoopResultBuilder]: For program point smp_get_func_def_resp_len_returnLabel#1(lines 159 168) no Hoare annotation was computed. [2023-11-29 03:12:53,805 INFO L899 garLoopResultBuilder]: For program point L460(line 460) no Hoare annotation was computed. [2023-11-29 03:12:53,805 INFO L895 garLoopResultBuilder]: At program point L204(line 204) the Hoare annotation is: false [2023-11-29 03:12:53,805 INFO L899 garLoopResultBuilder]: For program point L204-1(line 204) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L460-2(lines 460 475) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L428(lines 428 429) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L428-2(lines 428 429) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L453(lines 453 457) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 165) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L445(line 445) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 192) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L445-2(lines 445 448) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L470(lines 470 473) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L437(lines 437 440) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L462(lines 462 465) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L173(lines 173 222) no Hoare annotation was computed. [2023-11-29 03:12:53,806 INFO L899 garLoopResultBuilder]: For program point L462-2(lines 462 465) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 208) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L899 garLoopResultBuilder]: For program point L207-2(lines 207 208) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 200) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L895 garLoopResultBuilder]: At program point L199-2(lines 199 200) the Hoare annotation is: false [2023-11-29 03:12:53,807 INFO L899 garLoopResultBuilder]: For program point L480(lines 480 483) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L899 garLoopResultBuilder]: For program point do_discover_list_returnLabel#1(lines 414 489) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L895 garLoopResultBuilder]: At program point L216(line 216) the Hoare annotation is: false [2023-11-29 03:12:53,807 INFO L899 garLoopResultBuilder]: For program point L216-1(line 216) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L899 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 156) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 153 158) no Hoare annotation was computed. [2023-11-29 03:12:53,807 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 153 158) the Hoare annotation is: true [2023-11-29 03:12:53,808 INFO L899 garLoopResultBuilder]: For program point L154-2(lines 153 158) no Hoare annotation was computed. [2023-11-29 03:12:53,808 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2023-11-29 03:12:53,810 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1] [2023-11-29 03:12:53,812 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:12:53,825 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#6[#ptr!base][16 + #ptr!offset] could not be translated [2023-11-29 03:12:53,826 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#6[#ptr!base][16 + #ptr!offset] could not be translated [2023-11-29 03:12:53,827 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#6[#ptr!base][16 + #ptr!offset] could not be translated [2023-11-29 03:12:53,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:12:53 BoogieIcfgContainer [2023-11-29 03:12:53,827 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:12:53,828 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:12:53,828 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:12:53,828 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:12:53,829 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:01:49" (3/4) ... [2023-11-29 03:12:53,831 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 03:12:53,834 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#5 [2023-11-29 03:12:53,834 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#4 [2023-11-29 03:12:53,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#7 [2023-11-29 03:12:53,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#6 [2023-11-29 03:12:53,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#1 [2023-11-29 03:12:53,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#0 [2023-11-29 03:12:53,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#3 [2023-11-29 03:12:53,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#2 [2023-11-29 03:12:53,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 03:12:53,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#9 [2023-11-29 03:12:53,835 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset#8 [2023-11-29 03:12:53,847 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 52 nodes and edges [2023-11-29 03:12:53,849 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-29 03:12:53,850 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 03:12:53,851 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 03:12:53,852 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 03:12:53,852 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 03:12:53,989 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 03:12:53,989 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 03:12:53,989 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:12:53,990 INFO L158 Benchmark]: Toolchain (without parser) took 666001.91ms. Allocated memory was 117.4MB in the beginning and 224.4MB in the end (delta: 107.0MB). Free memory was 71.7MB in the beginning and 68.7MB in the end (delta: 3.1MB). Peak memory consumption was 110.5MB. Max. memory is 16.1GB. [2023-11-29 03:12:53,990 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 92.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:12:53,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 427.91ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 71.5MB in the beginning and 121.5MB in the end (delta: -50.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2023-11-29 03:12:53,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.90ms. Allocated memory is still 155.2MB. Free memory was 121.5MB in the beginning and 116.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:12:53,991 INFO L158 Benchmark]: Boogie Preprocessor took 86.19ms. Allocated memory is still 155.2MB. Free memory was 116.7MB in the beginning and 111.8MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 03:12:53,992 INFO L158 Benchmark]: RCFGBuilder took 764.21ms. Allocated memory is still 155.2MB. Free memory was 111.8MB in the beginning and 114.1MB in the end (delta: -2.4MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2023-11-29 03:12:53,992 INFO L158 Benchmark]: TraceAbstraction took 664490.24ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 113.0MB in the beginning and 80.2MB in the end (delta: 32.8MB). Peak memory consumption was 101.9MB. Max. memory is 16.1GB. [2023-11-29 03:12:53,993 INFO L158 Benchmark]: Witness Printer took 161.54ms. Allocated memory is still 224.4MB. Free memory was 80.2MB in the beginning and 68.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 03:12:53,995 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 117.4MB. Free memory is still 92.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 427.91ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 71.5MB in the beginning and 121.5MB in the end (delta: -50.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.90ms. Allocated memory is still 155.2MB. Free memory was 121.5MB in the beginning and 116.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.19ms. Allocated memory is still 155.2MB. Free memory was 116.7MB in the beginning and 111.8MB in the end (delta: 4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 764.21ms. Allocated memory is still 155.2MB. Free memory was 111.8MB in the beginning and 114.1MB in the end (delta: -2.4MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. * TraceAbstraction took 664490.24ms. Allocated memory was 155.2MB in the beginning and 224.4MB in the end (delta: 69.2MB). Free memory was 113.0MB in the beginning and 80.2MB in the end (delta: 32.8MB). Peak memory consumption was 101.9MB. Max. memory is 16.1GB. * Witness Printer took 161.54ms. Allocated memory is still 224.4MB. Free memory was 80.2MB in the beginning and 68.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#6[#ptr!base][16 + #ptr!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#6[#ptr!base][16 + #ptr!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#6[#ptr!base][16 + #ptr!offset] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 155]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 664.4s, OverallIterations: 11, TraceHistogramMax: 46, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 319.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 715 SdHoareTripleChecker+Valid, 24.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 689 mSDsluCounter, 10261 SdHoareTripleChecker+Invalid, 23.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9488 mSDsCounter, 197 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7117 IncrementalHoareTripleChecker+Invalid, 7315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 197 mSolverCounterUnsat, 773 mSDtfsCounter, 7117 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1462 GetRequests, 911 SyntacticMatches, 0 SemanticMatches, 551 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6051 ImplicationChecksByTransitivity, 310.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=10, InterpolantAutomatonStates: 264, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 53 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 111 PreInvPairs, 137 NumberOfFragments, 287 HoareAnnotationTreeSize, 111 FomulaSimplifications, 811 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 261 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 316.9s SatisfiabilityAnalysisTime, 24.1s InterpolantComputationTime, 1168 NumberOfCodeBlocks, 1140 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 1690 ConstructedInterpolants, 7 QuantifiedInterpolants, 4720 SizeOfPredicates, 20 NumberOfNonLiveVariables, 7015 ConjunctsInSsa, 274 ConjunctsInUnsatCore, 29 InterpolantComputations, 3 PerfectInterpolantSequences, 10254/12444 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 162]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 195]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-11-29 03:12:54,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7116348-a9b8-4963-be1d-937de0e7f4b4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE