./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i --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_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/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_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/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_667ca78a-6b68-437e-9c8f-905dd1335b0f/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 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:33:57,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:33:57,795 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:33:57,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:33:57,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:33:57,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:33:57,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:33:57,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:33:57,829 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:33:57,829 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:33:57,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:33:57,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:33:57,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:33:57,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:33:57,832 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:33:57,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:33:57,834 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:33:57,834 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:33:57,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:33:57,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:33:57,836 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:33:57,836 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:33:57,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:33:57,837 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:33:57,838 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:33:57,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:33:57,839 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:33:57,839 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:33:57,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:33:57,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:33:57,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:33:57,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:33:57,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:33:57,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:33:57,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:33:57,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:33:57,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:33:57,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:33:57,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:33:57,843 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:33:57,843 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:33:57,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:33:57,844 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_667ca78a-6b68-437e-9c8f-905dd1335b0f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 [2023-11-29 02:33:58,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:33:58,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:33:58,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:33:58,076 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:33:58,077 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:33:58,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2023-11-29 02:33:58,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:34:03,204 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:34:03,205 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2023-11-29 02:34:03,222 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/data/b900ca9ff/0c96f1e16845427daea7f0d98bd5f9d9/FLAG52f94e085 [2023-11-29 02:34:03,235 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/data/b900ca9ff/0c96f1e16845427daea7f0d98bd5f9d9 [2023-11-29 02:34:03,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:34:03,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:34:03,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:34:03,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:34:03,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:34:03,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c15a4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03, skipping insertion in model container [2023-11-29 02:34:03,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,301 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:34:03,617 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_667ca78a-6b68-437e-9c8f-905dd1335b0f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[33021,33034] [2023-11-29 02:34:03,710 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_667ca78a-6b68-437e-9c8f-905dd1335b0f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44124,44137] [2023-11-29 02:34:03,711 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_667ca78a-6b68-437e-9c8f-905dd1335b0f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44245,44258] [2023-11-29 02:34:03,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:34:03,728 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:34:03,758 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_667ca78a-6b68-437e-9c8f-905dd1335b0f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[33021,33034] [2023-11-29 02:34:03,836 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_667ca78a-6b68-437e-9c8f-905dd1335b0f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44124,44137] [2023-11-29 02:34:03,837 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_667ca78a-6b68-437e-9c8f-905dd1335b0f/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i[44245,44258] [2023-11-29 02:34:03,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:34:03,881 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:34:03,889 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:34:03,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03 WrapperNode [2023-11-29 02:34:03,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:34:03,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:34:03,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:34:03,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:34:03,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:03,992 INFO L138 Inliner]: procedures = 176, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1329 [2023-11-29 02:34:03,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:34:03,994 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:34:03,994 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:34:03,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:34:04,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:04,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:04,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:04,097 INFO L175 MemorySlicer]: Split 258 memory accesses to 4 slices as follows [2, 34, 217, 5]. 84 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 55 writes are split as follows [0, 4, 50, 1]. [2023-11-29 02:34:04,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:04,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:04,143 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:04,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:04,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:04,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:04,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:34:04,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:34:04,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:34:04,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:34:04,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (1/1) ... [2023-11-29 02:34:04,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:34:04,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:04,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:34:04,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:34:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:34:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:34:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:34:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 02:34:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:34:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:34:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:34:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:34:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 02:34:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 02:34:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 02:34:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 02:34:04,257 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 02:34:04,257 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 02:34:04,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 02:34:04,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 02:34:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 02:34:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:34:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 02:34:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 02:34:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 02:34:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 02:34:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:34:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 02:34:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 02:34:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 02:34:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 02:34:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 02:34:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:34:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:34:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:34:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:34:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:34:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:34:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:34:04,464 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:34:04,465 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:34:05,866 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:34:05,910 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:34:05,910 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-29 02:34:05,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:34:05 BoogieIcfgContainer [2023-11-29 02:34:05,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:34:05,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:34:05,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:34:05,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:34:05,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:34:03" (1/3) ... [2023-11-29 02:34:05,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d16a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:34:05, skipping insertion in model container [2023-11-29 02:34:05,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:34:03" (2/3) ... [2023-11-29 02:34:05,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d16a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:34:05, skipping insertion in model container [2023-11-29 02:34:05,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:34:05" (3/3) ... [2023-11-29 02:34:05,919 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-1.i [2023-11-29 02:34:05,933 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:34:05,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 02:34:05,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:34:05,987 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;@1174d3f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:34:05,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 02:34:05,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 349 states, 342 states have (on average 1.7105263157894737) internal successors, (585), 344 states have internal predecessors, (585), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:34:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 02:34:05,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:05,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:05,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:06,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash -994075135, now seen corresponding path program 1 times [2023-11-29 02:34:06,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:06,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106963949] [2023-11-29 02:34:06,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:06,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:06,176 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 02:34:06,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:06,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106963949] [2023-11-29 02:34:06,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106963949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:06,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:06,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:34:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843577658] [2023-11-29 02:34:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:06,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 02:34:06,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:06,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 02:34:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:34:06,212 INFO L87 Difference]: Start difference. First operand has 349 states, 342 states have (on average 1.7105263157894737) internal successors, (585), 344 states have internal predecessors, (585), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 02:34:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:06,286 INFO L93 Difference]: Finished difference Result 697 states and 1181 transitions. [2023-11-29 02:34:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:34:06,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2023-11-29 02:34:06,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:06,301 INFO L225 Difference]: With dead ends: 697 [2023-11-29 02:34:06,301 INFO L226 Difference]: Without dead ends: 347 [2023-11-29 02:34:06,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 02:34:06,309 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:06,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:34:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-29 02:34:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-11-29 02:34:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 341 states have (on average 1.5073313782991202) internal successors, (514), 342 states have internal predecessors, (514), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:34:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 520 transitions. [2023-11-29 02:34:06,374 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 520 transitions. Word has length 7 [2023-11-29 02:34:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:06,375 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 520 transitions. [2023-11-29 02:34:06,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 02:34:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 520 transitions. [2023-11-29 02:34:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 02:34:06,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:06,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:06,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:34:06,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:06,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1663765287, now seen corresponding path program 1 times [2023-11-29 02:34:06,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:06,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236404691] [2023-11-29 02:34:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:06,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:06,530 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 02:34:06,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:06,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236404691] [2023-11-29 02:34:06,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236404691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:06,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:06,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:34:06,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497004309] [2023-11-29 02:34:06,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:06,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:34:06,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:06,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:34:06,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:34:06,535 INFO L87 Difference]: Start difference. First operand 347 states and 520 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 02:34:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:06,698 INFO L93 Difference]: Finished difference Result 859 states and 1290 transitions. [2023-11-29 02:34:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:34:06,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2023-11-29 02:34:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:06,705 INFO L225 Difference]: With dead ends: 859 [2023-11-29 02:34:06,705 INFO L226 Difference]: Without dead ends: 689 [2023-11-29 02:34:06,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:34:06,708 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 506 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:06,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1493 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:34:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-11-29 02:34:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 349. [2023-11-29 02:34:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 343 states have (on average 1.5043731778425655) internal successors, (516), 344 states have internal predecessors, (516), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:34:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 522 transitions. [2023-11-29 02:34:06,738 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 522 transitions. Word has length 9 [2023-11-29 02:34:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:06,738 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 522 transitions. [2023-11-29 02:34:06,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 02:34:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 522 transitions. [2023-11-29 02:34:06,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 02:34:06,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:06,743 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:06,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:34:06,744 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:06,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:06,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1560526843, now seen corresponding path program 1 times [2023-11-29 02:34:06,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:06,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564537218] [2023-11-29 02:34:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:06,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:06,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:06,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1852915906] [2023-11-29 02:34:06,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:06,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:06,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:06,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:06,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:34:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:07,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:34:07,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:34:07,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:07,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:07,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564537218] [2023-11-29 02:34:07,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:07,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852915906] [2023-11-29 02:34:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852915906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:07,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:07,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:34:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932946805] [2023-11-29 02:34:07,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:07,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:34:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:07,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:34:07,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:34:07,198 INFO L87 Difference]: Start difference. First operand 349 states and 522 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 02:34:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:07,307 INFO L93 Difference]: Finished difference Result 716 states and 1072 transitions. [2023-11-29 02:34:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:34:07,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) Word has length 85 [2023-11-29 02:34:07,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:07,310 INFO L225 Difference]: With dead ends: 716 [2023-11-29 02:34:07,311 INFO L226 Difference]: Without dead ends: 370 [2023-11-29 02:34:07,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:34:07,313 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 9 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:07,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 982 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:34:07,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-29 02:34:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2023-11-29 02:34:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 363 states have (on average 1.4765840220385675) internal successors, (536), 364 states have internal predecessors, (536), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:34:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 542 transitions. [2023-11-29 02:34:07,331 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 542 transitions. Word has length 85 [2023-11-29 02:34:07,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:07,332 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 542 transitions. [2023-11-29 02:34:07,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 02:34:07,332 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 542 transitions. [2023-11-29 02:34:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 02:34:07,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:07,337 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:07,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:34:07,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:07,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:07,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1518286727, now seen corresponding path program 1 times [2023-11-29 02:34:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:07,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793095582] [2023-11-29 02:34:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:07,613 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:07,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290706000] [2023-11-29 02:34:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:07,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:07,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:07,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:07,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:34:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:07,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:34:07,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:34:07,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:07,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:07,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793095582] [2023-11-29 02:34:07,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:07,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290706000] [2023-11-29 02:34:07,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290706000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:07,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:07,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:34:07,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265139222] [2023-11-29 02:34:07,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:07,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:34:07,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:07,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:34:07,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:34:07,962 INFO L87 Difference]: Start difference. First operand 369 states and 542 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 02:34:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:08,051 INFO L93 Difference]: Finished difference Result 722 states and 1068 transitions. [2023-11-29 02:34:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:34:08,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) Word has length 85 [2023-11-29 02:34:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:08,054 INFO L225 Difference]: With dead ends: 722 [2023-11-29 02:34:08,054 INFO L226 Difference]: Without dead ends: 356 [2023-11-29 02:34:08,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:34:08,056 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 165 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:08,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1321 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:34:08,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-29 02:34:08,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 355. [2023-11-29 02:34:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 349 states have (on average 1.475644699140401) internal successors, (515), 350 states have internal predecessors, (515), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:34:08,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 521 transitions. [2023-11-29 02:34:08,070 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 521 transitions. Word has length 85 [2023-11-29 02:34:08,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:08,070 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 521 transitions. [2023-11-29 02:34:08,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 02:34:08,070 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 521 transitions. [2023-11-29 02:34:08,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 02:34:08,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:08,073 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:08,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:34:08,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:08,279 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:08,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2115002759, now seen corresponding path program 1 times [2023-11-29 02:34:08,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:08,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357373430] [2023-11-29 02:34:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:08,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:08,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:08,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697093745] [2023-11-29 02:34:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:08,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:08,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:08,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:34:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:08,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:34:08,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:34:08,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:08,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:08,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357373430] [2023-11-29 02:34:08,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:08,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697093745] [2023-11-29 02:34:08,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697093745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:08,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:08,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:34:08,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740584251] [2023-11-29 02:34:08,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:08,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:34:08,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:34:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:34:08,888 INFO L87 Difference]: Start difference. First operand 355 states and 521 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 02:34:09,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:09,020 INFO L93 Difference]: Finished difference Result 972 states and 1441 transitions. [2023-11-29 02:34:09,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:34:09,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) Word has length 85 [2023-11-29 02:34:09,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:09,025 INFO L225 Difference]: With dead ends: 972 [2023-11-29 02:34:09,026 INFO L226 Difference]: Without dead ends: 620 [2023-11-29 02:34:09,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:34:09,027 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 344 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:09,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1161 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:34:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-11-29 02:34:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 613. [2023-11-29 02:34:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 607 states have (on average 1.4991762767710048) internal successors, (910), 608 states have internal predecessors, (910), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 02:34:09,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 916 transitions. [2023-11-29 02:34:09,051 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 916 transitions. Word has length 85 [2023-11-29 02:34:09,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:09,052 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 916 transitions. [2023-11-29 02:34:09,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 02:34:09,052 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 916 transitions. [2023-11-29 02:34:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 02:34:09,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:09,054 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:09,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:34:09,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:09,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:09,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:09,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1881337811, now seen corresponding path program 1 times [2023-11-29 02:34:09,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:09,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147319349] [2023-11-29 02:34:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:09,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:09,310 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:09,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522684543] [2023-11-29 02:34:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:09,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:09,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:09,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:09,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:34:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:09,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:34:09,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:09,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:34:09,909 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 19 treesize of output 11 [2023-11-29 02:34:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:34:09,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:34:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:34:10,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:10,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147319349] [2023-11-29 02:34:10,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:10,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522684543] [2023-11-29 02:34:10,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522684543] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:34:10,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:34:10,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 02:34:10,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347946056] [2023-11-29 02:34:10,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:34:10,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:34:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:10,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:34:10,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:34:10,141 INFO L87 Difference]: Start difference. First operand 613 states and 916 transitions. Second operand has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:34:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:10,520 INFO L93 Difference]: Finished difference Result 2651 states and 3965 transitions. [2023-11-29 02:34:10,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:34:10,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 98 [2023-11-29 02:34:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:10,533 INFO L225 Difference]: With dead ends: 2651 [2023-11-29 02:34:10,534 INFO L226 Difference]: Without dead ends: 2340 [2023-11-29 02:34:10,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 184 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:34:10,536 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 3086 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3094 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:10,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3094 Valid, 3935 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:34:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2023-11-29 02:34:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1034. [2023-11-29 02:34:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1018 states have (on average 1.4666011787819253) internal successors, (1493), 1019 states have internal predecessors, (1493), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 02:34:10,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1517 transitions. [2023-11-29 02:34:10,581 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1517 transitions. Word has length 98 [2023-11-29 02:34:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:10,582 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1517 transitions. [2023-11-29 02:34:10,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:34:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1517 transitions. [2023-11-29 02:34:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-11-29 02:34:10,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:10,586 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:10,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:34:10,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 02:34:10,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:10,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:10,788 INFO L85 PathProgramCache]: Analyzing trace with hash -936100621, now seen corresponding path program 1 times [2023-11-29 02:34:10,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:10,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10393416] [2023-11-29 02:34:10,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:10,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:10,953 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:10,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636102952] [2023-11-29 02:34:10,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:10,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:10,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:10,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:10,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:34:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:11,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:34:11,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:11,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:34:11,877 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 19 treesize of output 11 [2023-11-29 02:34:12,011 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 19 treesize of output 11 [2023-11-29 02:34:12,146 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 19 treesize of output 11 [2023-11-29 02:34:12,278 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 19 treesize of output 11 [2023-11-29 02:34:12,308 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:34:12,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:34:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:34:12,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:12,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10393416] [2023-11-29 02:34:12,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:12,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636102952] [2023-11-29 02:34:12,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636102952] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:34:12,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:34:12,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 02:34:12,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398646384] [2023-11-29 02:34:12,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:34:12,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 02:34:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:12,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 02:34:12,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:34:12,815 INFO L87 Difference]: Start difference. First operand 1034 states and 1517 transitions. Second operand has 15 states, 15 states have (on average 42.266666666666666) internal successors, (634), 15 states have internal predecessors, (634), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:34:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:14,166 INFO L93 Difference]: Finished difference Result 5585 states and 8360 transitions. [2023-11-29 02:34:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 02:34:14,167 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 42.266666666666666) internal successors, (634), 15 states have internal predecessors, (634), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 326 [2023-11-29 02:34:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:14,199 INFO L225 Difference]: With dead ends: 5585 [2023-11-29 02:34:14,199 INFO L226 Difference]: Without dead ends: 5274 [2023-11-29 02:34:14,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 634 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-11-29 02:34:14,203 INFO L413 NwaCegarLoop]: 2438 mSDtfsCounter, 6774 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6800 SdHoareTripleChecker+Valid, 19029 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:14,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6800 Valid, 19029 Invalid, 957 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 02:34:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2023-11-29 02:34:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 2108. [2023-11-29 02:34:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2074 states have (on average 1.4517839922854388) internal successors, (3011), 2075 states have internal predecessors, (3011), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 02:34:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3071 transitions. [2023-11-29 02:34:14,337 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3071 transitions. Word has length 326 [2023-11-29 02:34:14,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:14,338 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 3071 transitions. [2023-11-29 02:34:14,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 42.266666666666666) internal successors, (634), 15 states have internal predecessors, (634), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:34:14,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3071 transitions. [2023-11-29 02:34:14,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-29 02:34:14,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:14,364 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:14,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:34:14,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 02:34:14,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:14,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1893357773, now seen corresponding path program 2 times [2023-11-29 02:34:14,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:14,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148494635] [2023-11-29 02:34:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:14,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:14,869 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:14,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538040996] [2023-11-29 02:34:14,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:34:14,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:14,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:14,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:14,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:34:15,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:34:15,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:34:15,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:34:15,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:15,604 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 15 treesize of output 1 [2023-11-29 02:34:15,612 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 02:34:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2023-11-29 02:34:15,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:15,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:15,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148494635] [2023-11-29 02:34:15,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538040996] [2023-11-29 02:34:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538040996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:15,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:15,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:34:15,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367522688] [2023-11-29 02:34:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:15,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:34:15,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:15,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:34:15,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:34:15,623 INFO L87 Difference]: Start difference. First operand 2108 states and 3071 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:15,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:15,744 INFO L93 Difference]: Finished difference Result 2307 states and 3366 transitions. [2023-11-29 02:34:15,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:34:15,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 782 [2023-11-29 02:34:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:15,756 INFO L225 Difference]: With dead ends: 2307 [2023-11-29 02:34:15,757 INFO L226 Difference]: Without dead ends: 2303 [2023-11-29 02:34:15,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:34:15,758 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 492 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:15,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1472 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:34:15,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2023-11-29 02:34:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2110. [2023-11-29 02:34:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2076 states have (on average 1.451348747591522) internal successors, (3013), 2077 states have internal predecessors, (3013), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 02:34:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3073 transitions. [2023-11-29 02:34:15,882 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3073 transitions. Word has length 782 [2023-11-29 02:34:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:15,883 INFO L495 AbstractCegarLoop]: Abstraction has 2110 states and 3073 transitions. [2023-11-29 02:34:15,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:15,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3073 transitions. [2023-11-29 02:34:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2023-11-29 02:34:15,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:15,923 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:15,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:34:16,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 02:34:16,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:16,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:16,125 INFO L85 PathProgramCache]: Analyzing trace with hash 869607037, now seen corresponding path program 1 times [2023-11-29 02:34:16,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:16,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130462379] [2023-11-29 02:34:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:16,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:16,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:16,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088870880] [2023-11-29 02:34:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:16,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:16,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:16,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:16,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:34:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:17,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 4050 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:34:17,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:17,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2023-11-29 02:34:17,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:17,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:17,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130462379] [2023-11-29 02:34:17,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:17,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088870880] [2023-11-29 02:34:17,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088870880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:17,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:17,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:34:17,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535161788] [2023-11-29 02:34:17,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:17,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:34:17,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:17,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:34:17,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:34:17,951 INFO L87 Difference]: Start difference. First operand 2110 states and 3073 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:18,047 INFO L93 Difference]: Finished difference Result 2462 states and 3608 transitions. [2023-11-29 02:34:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:34:18,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 836 [2023-11-29 02:34:18,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:18,063 INFO L225 Difference]: With dead ends: 2462 [2023-11-29 02:34:18,063 INFO L226 Difference]: Without dead ends: 2152 [2023-11-29 02:34:18,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:34:18,065 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 8 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:18,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 970 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:34:18,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2023-11-29 02:34:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2150. [2023-11-29 02:34:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2116 states have (on average 1.4428166351606806) internal successors, (3053), 2117 states have internal predecessors, (3053), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 02:34:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3113 transitions. [2023-11-29 02:34:18,141 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3113 transitions. Word has length 836 [2023-11-29 02:34:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:18,142 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3113 transitions. [2023-11-29 02:34:18,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3113 transitions. [2023-11-29 02:34:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2023-11-29 02:34:18,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:18,154 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:18,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 02:34:18,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 02:34:18,357 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:18,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:18,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1898966335, now seen corresponding path program 1 times [2023-11-29 02:34:18,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:18,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745991556] [2023-11-29 02:34:18,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:18,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:18,615 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:18,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851133400] [2023-11-29 02:34:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:18,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:18,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:18,617 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:18,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:34:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:20,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 4052 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:34:20,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2023-11-29 02:34:20,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:20,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:20,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745991556] [2023-11-29 02:34:20,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851133400] [2023-11-29 02:34:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851133400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:20,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:20,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:34:20,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479221935] [2023-11-29 02:34:20,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:20,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:34:20,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:34:20,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:34:20,156 INFO L87 Difference]: Start difference. First operand 2150 states and 3113 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:20,269 INFO L93 Difference]: Finished difference Result 2474 states and 3600 transitions. [2023-11-29 02:34:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:34:20,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 836 [2023-11-29 02:34:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:20,284 INFO L225 Difference]: With dead ends: 2474 [2023-11-29 02:34:20,284 INFO L226 Difference]: Without dead ends: 2124 [2023-11-29 02:34:20,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:34:20,286 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 147 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:20,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1772 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:34:20,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2023-11-29 02:34:20,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2122. [2023-11-29 02:34:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2088 states have (on average 1.4420498084291187) internal successors, (3011), 2089 states have internal predecessors, (3011), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 02:34:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3071 transitions. [2023-11-29 02:34:20,360 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3071 transitions. Word has length 836 [2023-11-29 02:34:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:20,361 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 3071 transitions. [2023-11-29 02:34:20,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:20,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3071 transitions. [2023-11-29 02:34:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2023-11-29 02:34:20,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:20,373 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:20,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:34:20,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:34:20,590 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:20,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1082912881, now seen corresponding path program 1 times [2023-11-29 02:34:20,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:20,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340111172] [2023-11-29 02:34:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:20,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:20,840 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:20,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244425034] [2023-11-29 02:34:20,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:20,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:20,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:20,842 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:20,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:34:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:22,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 4038 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:34:22,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2023-11-29 02:34:22,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:22,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:22,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340111172] [2023-11-29 02:34:22,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:22,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244425034] [2023-11-29 02:34:22,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244425034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:22,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:22,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:34:22,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819461224] [2023-11-29 02:34:22,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:22,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:34:22,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:22,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:34:22,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:34:22,327 INFO L87 Difference]: Start difference. First operand 2122 states and 3071 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:22,394 INFO L93 Difference]: Finished difference Result 2354 states and 3392 transitions. [2023-11-29 02:34:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:34:22,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 836 [2023-11-29 02:34:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:22,407 INFO L225 Difference]: With dead ends: 2354 [2023-11-29 02:34:22,407 INFO L226 Difference]: Without dead ends: 2032 [2023-11-29 02:34:22,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 833 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:34:22,409 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 78 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:22,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1168 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:34:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2023-11-29 02:34:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 2032. [2023-11-29 02:34:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 1998 states have (on average 1.42992992992993) internal successors, (2857), 1999 states have internal predecessors, (2857), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-29 02:34:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 2917 transitions. [2023-11-29 02:34:22,468 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 2917 transitions. Word has length 836 [2023-11-29 02:34:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:22,469 INFO L495 AbstractCegarLoop]: Abstraction has 2032 states and 2917 transitions. [2023-11-29 02:34:22,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 2917 transitions. [2023-11-29 02:34:22,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2023-11-29 02:34:22,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:22,481 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:34:22,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:34:22,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:22,682 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:22,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2112272179, now seen corresponding path program 1 times [2023-11-29 02:34:22,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:22,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456591902] [2023-11-29 02:34:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:22,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:22,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:22,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [206244092] [2023-11-29 02:34:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:22,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:22,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:22,923 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:22,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:34:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:24,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 4040 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 02:34:24,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 1062 proven. 0 refuted. 0 times theorem prover too weak. 2363 trivial. 0 not checked. [2023-11-29 02:34:26,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456591902] [2023-11-29 02:34:26,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:26,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206244092] [2023-11-29 02:34:26,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206244092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:26,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:26,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:34:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392944853] [2023-11-29 02:34:26,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:26,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:34:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:26,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:34:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:34:26,718 INFO L87 Difference]: Start difference. First operand 2032 states and 2917 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:26,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:26,862 INFO L93 Difference]: Finished difference Result 5080 states and 7307 transitions. [2023-11-29 02:34:26,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:34:26,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 836 [2023-11-29 02:34:26,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:26,878 INFO L225 Difference]: With dead ends: 5080 [2023-11-29 02:34:26,878 INFO L226 Difference]: Without dead ends: 3529 [2023-11-29 02:34:26,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:34:26,881 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 282 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:26,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1047 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:34:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2023-11-29 02:34:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3522. [2023-11-29 02:34:26,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 3479 states have (on average 1.4366197183098592) internal successors, (4998), 3480 states have internal predecessors, (4998), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-29 02:34:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 5076 transitions. [2023-11-29 02:34:26,953 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 5076 transitions. Word has length 836 [2023-11-29 02:34:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:26,954 INFO L495 AbstractCegarLoop]: Abstraction has 3522 states and 5076 transitions. [2023-11-29 02:34:26,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 5076 transitions. [2023-11-29 02:34:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2023-11-29 02:34:26,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:26,964 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:26,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 02:34:27,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:27,165 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:27,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:27,166 INFO L85 PathProgramCache]: Analyzing trace with hash 127936070, now seen corresponding path program 1 times [2023-11-29 02:34:27,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:27,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440613935] [2023-11-29 02:34:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:27,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:27,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:27,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839614700] [2023-11-29 02:34:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:27,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:27,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:27,447 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:27,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:34:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:29,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 4076 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 02:34:29,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:29,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:34:29,239 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 19 treesize of output 11 [2023-11-29 02:34:29,341 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 19 treesize of output 11 [2023-11-29 02:34:29,432 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 19 treesize of output 11 [2023-11-29 02:34:29,530 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 19 treesize of output 11 [2023-11-29 02:34:29,623 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 19 treesize of output 11 [2023-11-29 02:34:29,714 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 19 treesize of output 11 [2023-11-29 02:34:29,812 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 19 treesize of output 11 [2023-11-29 02:34:29,906 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 19 treesize of output 11 [2023-11-29 02:34:30,010 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 19 treesize of output 11 [2023-11-29 02:34:30,103 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 19 treesize of output 11 [2023-11-29 02:34:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:34:30,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:34:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:34:31,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:31,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440613935] [2023-11-29 02:34:31,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:31,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839614700] [2023-11-29 02:34:31,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839614700] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:34:31,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:34:31,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-29 02:34:31,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503649899] [2023-11-29 02:34:31,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:34:31,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 02:34:31,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:31,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 02:34:31,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2023-11-29 02:34:31,160 INFO L87 Difference]: Start difference. First operand 3522 states and 5076 transitions. Second operand has 27 states, 27 states have (on average 59.629629629629626) internal successors, (1610), 27 states have internal predecessors, (1610), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:34:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:33,885 INFO L93 Difference]: Finished difference Result 15407 states and 21734 transitions. [2023-11-29 02:34:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 02:34:33,886 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 59.629629629629626) internal successors, (1610), 27 states have internal predecessors, (1610), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 846 [2023-11-29 02:34:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:33,927 INFO L225 Difference]: With dead ends: 15407 [2023-11-29 02:34:33,927 INFO L226 Difference]: Without dead ends: 15077 [2023-11-29 02:34:33,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1712 GetRequests, 1662 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=681, Invalid=1671, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 02:34:33,930 INFO L413 NwaCegarLoop]: 4592 mSDtfsCounter, 18632 mSDsluCounter, 58627 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18694 SdHoareTripleChecker+Valid, 63219 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:33,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18694 Valid, 63219 Invalid, 2329 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [96 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:34:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15077 states. [2023-11-29 02:34:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15077 to 7686. [2023-11-29 02:34:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7686 states, 7595 states have (on average 1.4417379855167873) internal successors, (10950), 7596 states have internal predecessors, (10950), 87 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-29 02:34:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7686 states to 7686 states and 11124 transitions. [2023-11-29 02:34:34,116 INFO L78 Accepts]: Start accepts. Automaton has 7686 states and 11124 transitions. Word has length 846 [2023-11-29 02:34:34,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:34,117 INFO L495 AbstractCegarLoop]: Abstraction has 7686 states and 11124 transitions. [2023-11-29 02:34:34,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 59.629629629629626) internal successors, (1610), 27 states have internal predecessors, (1610), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:34:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 7686 states and 11124 transitions. [2023-11-29 02:34:34,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1759 [2023-11-29 02:34:34,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:34,150 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:34,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:34:34,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:34,351 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:34,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1002060486, now seen corresponding path program 2 times [2023-11-29 02:34:34,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:34,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246393404] [2023-11-29 02:34:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:34,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:34,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:34,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604285113] [2023-11-29 02:34:34,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:34:34,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:34,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:34,928 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:34,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:34:36,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:34:36,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:34:36,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 02:34:36,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:38,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:34:38,683 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:34:38,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 23 [2023-11-29 02:34:38,845 INFO L134 CoverageAnalysis]: Checked inductivity of 17561 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17561 trivial. 0 not checked. [2023-11-29 02:34:38,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:34:38,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:38,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246393404] [2023-11-29 02:34:38,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:38,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604285113] [2023-11-29 02:34:38,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604285113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:34:38,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:34:38,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 02:34:38,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703408375] [2023-11-29 02:34:38,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:34:38,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 02:34:38,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:38,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 02:34:38,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:34:38,849 INFO L87 Difference]: Start difference. First operand 7686 states and 11124 transitions. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:39,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:34:39,797 INFO L93 Difference]: Finished difference Result 8254 states and 11901 transitions. [2023-11-29 02:34:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:34:39,797 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1758 [2023-11-29 02:34:39,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:34:39,816 INFO L225 Difference]: With dead ends: 8254 [2023-11-29 02:34:39,817 INFO L226 Difference]: Without dead ends: 7930 [2023-11-29 02:34:39,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1763 GetRequests, 1748 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:34:39,820 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 755 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:34:39,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 3290 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:34:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7930 states. [2023-11-29 02:34:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7930 to 7744. [2023-11-29 02:34:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7744 states, 7653 states have (on average 1.438390173788057) internal successors, (11008), 7654 states have internal predecessors, (11008), 87 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-29 02:34:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7744 states to 7744 states and 11182 transitions. [2023-11-29 02:34:40,046 INFO L78 Accepts]: Start accepts. Automaton has 7744 states and 11182 transitions. Word has length 1758 [2023-11-29 02:34:40,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:34:40,048 INFO L495 AbstractCegarLoop]: Abstraction has 7744 states and 11182 transitions. [2023-11-29 02:34:40,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:34:40,049 INFO L276 IsEmpty]: Start isEmpty. Operand 7744 states and 11182 transitions. [2023-11-29 02:34:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1760 [2023-11-29 02:34:40,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:34:40,092 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:34:40,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:34:40,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:40,293 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:34:40,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:34:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash -491555534, now seen corresponding path program 1 times [2023-11-29 02:34:40,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:34:40,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402137178] [2023-11-29 02:34:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:40,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:34:40,877 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:34:40,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684672393] [2023-11-29 02:34:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:34:40,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:34:40,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:34:40,879 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:34:40,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:34:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:34:43,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 8505 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 02:34:43,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:34:43,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:34:44,060 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 19 treesize of output 11 [2023-11-29 02:34:44,164 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 19 treesize of output 11 [2023-11-29 02:34:44,270 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 19 treesize of output 11 [2023-11-29 02:34:44,371 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 19 treesize of output 11 [2023-11-29 02:34:44,455 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 19 treesize of output 11 [2023-11-29 02:34:44,552 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 19 treesize of output 11 [2023-11-29 02:34:44,649 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 19 treesize of output 11 [2023-11-29 02:34:44,735 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 19 treesize of output 11 [2023-11-29 02:34:44,849 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 19 treesize of output 11 [2023-11-29 02:34:44,953 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 19 treesize of output 11 [2023-11-29 02:34:45,052 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 19 treesize of output 11 [2023-11-29 02:34:45,170 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 19 treesize of output 11 [2023-11-29 02:34:45,285 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 19 treesize of output 11 [2023-11-29 02:34:45,403 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 19 treesize of output 11 [2023-11-29 02:34:45,521 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 19 treesize of output 11 [2023-11-29 02:34:45,638 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 19 treesize of output 11 [2023-11-29 02:34:45,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 02:34:45,836 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 19 treesize of output 11 [2023-11-29 02:34:45,932 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 19 treesize of output 11 [2023-11-29 02:34:46,028 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 19 treesize of output 11 [2023-11-29 02:34:46,117 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 19 treesize of output 11 [2023-11-29 02:34:46,205 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 19 treesize of output 11 [2023-11-29 02:34:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 17561 backedges. 0 proven. 17558 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:34:46,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:34:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 17561 backedges. 0 proven. 17558 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:34:48,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:34:48,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402137178] [2023-11-29 02:34:48,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:34:48,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684672393] [2023-11-29 02:34:48,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684672393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:34:48,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:34:48,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2023-11-29 02:34:48,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542927938] [2023-11-29 02:34:48,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:34:48,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 02:34:48,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:34:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 02:34:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=883, Invalid=1667, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 02:34:48,824 INFO L87 Difference]: Start difference. First operand 7744 states and 11182 transitions. Second operand has 51 states, 51 states have (on average 67.3529411764706) internal successors, (3435), 51 states have internal predecessors, (3435), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:35:00,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:35:00,980 INFO L93 Difference]: Finished difference Result 31569 states and 44542 transitions. [2023-11-29 02:35:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-29 02:35:00,981 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 67.3529411764706) internal successors, (3435), 51 states have internal predecessors, (3435), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1759 [2023-11-29 02:35:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:35:01,047 INFO L225 Difference]: With dead ends: 31569 [2023-11-29 02:35:01,047 INFO L226 Difference]: Without dead ends: 31181 [2023-11-29 02:35:01,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3562 GetRequests, 3464 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2655, Invalid=6657, Unknown=0, NotChecked=0, Total=9312 [2023-11-29 02:35:01,057 INFO L413 NwaCegarLoop]: 9607 mSDtfsCounter, 48329 mSDsluCounter, 237598 mSDsCounter, 0 mSdLazyCounter, 8678 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48463 SdHoareTripleChecker+Valid, 247205 SdHoareTripleChecker+Invalid, 8939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 8678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:35:01,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48463 Valid, 247205 Invalid, 8939 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [261 Valid, 8678 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 02:35:01,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31181 states. [2023-11-29 02:35:01,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31181 to 16072. [2023-11-29 02:35:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16072 states, 15885 states have (on average 1.4423670129052566) internal successors, (22912), 15886 states have internal predecessors, (22912), 183 states have call successors, (183), 2 states have call predecessors, (183), 2 states have return successors, (183), 183 states have call predecessors, (183), 183 states have call successors, (183) [2023-11-29 02:35:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16072 states to 16072 states and 23278 transitions. [2023-11-29 02:35:01,575 INFO L78 Accepts]: Start accepts. Automaton has 16072 states and 23278 transitions. Word has length 1759 [2023-11-29 02:35:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:35:01,576 INFO L495 AbstractCegarLoop]: Abstraction has 16072 states and 23278 transitions. [2023-11-29 02:35:01,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 67.3529411764706) internal successors, (3435), 51 states have internal predecessors, (3435), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:35:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 16072 states and 23278 transitions. [2023-11-29 02:35:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3584 [2023-11-29 02:35:01,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:35:01,661 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:01,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 02:35:01,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:01,862 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:35:01,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1019777998, now seen corresponding path program 2 times [2023-11-29 02:35:01,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:01,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891005738] [2023-11-29 02:35:01,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:01,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:03,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:03,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558977918] [2023-11-29 02:35:03,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:35:03,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:03,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:03,127 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:03,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:35:06,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:35:06,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:35:06,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 02:35:06,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:35:06,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 02:35:06,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 22 [2023-11-29 02:35:44,893 WARN L293 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 55 DAG size of output: 50 (called from [L 183] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2023-11-29 02:35:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 78665 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78665 trivial. 0 not checked. [2023-11-29 02:35:50,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:35:50,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:35:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891005738] [2023-11-29 02:35:50,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:35:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558977918] [2023-11-29 02:35:50,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558977918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:35:50,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:35:50,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 02:35:50,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050256472] [2023-11-29 02:35:50,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:35:50,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:35:50,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:35:50,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:35:50,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:35:50,899 INFO L87 Difference]: Start difference. First operand 16072 states and 23278 transitions. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:35:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:35:53,841 INFO L93 Difference]: Finished difference Result 16426 states and 23769 transitions. [2023-11-29 02:35:53,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:35:53,841 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 3583 [2023-11-29 02:35:53,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:35:53,867 INFO L225 Difference]: With dead ends: 16426 [2023-11-29 02:35:53,867 INFO L226 Difference]: Without dead ends: 16102 [2023-11-29 02:35:53,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3584 GetRequests, 3571 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:35:53,872 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 14 mSDsluCounter, 3878 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4289 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:35:53,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4289 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 02:35:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16102 states. [2023-11-29 02:35:54,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16102 to 16090. [2023-11-29 02:35:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16090 states, 15903 states have (on average 1.4420549581839905) internal successors, (22933), 15904 states have internal predecessors, (22933), 183 states have call successors, (183), 2 states have call predecessors, (183), 2 states have return successors, (183), 183 states have call predecessors, (183), 183 states have call successors, (183) [2023-11-29 02:35:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16090 states to 16090 states and 23299 transitions. [2023-11-29 02:35:54,167 INFO L78 Accepts]: Start accepts. Automaton has 16090 states and 23299 transitions. Word has length 3583 [2023-11-29 02:35:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:35:54,170 INFO L495 AbstractCegarLoop]: Abstraction has 16090 states and 23299 transitions. [2023-11-29 02:35:54,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:35:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 16090 states and 23299 transitions. [2023-11-29 02:35:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3585 [2023-11-29 02:35:54,253 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:35:54,254 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:54,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:35:54,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:35:54,455 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:35:54,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:35:54,456 INFO L85 PathProgramCache]: Analyzing trace with hash -907856883, now seen corresponding path program 1 times [2023-11-29 02:35:54,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:35:54,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135769237] [2023-11-29 02:35:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:54,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:35:55,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:35:55,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020866924] [2023-11-29 02:35:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:35:55,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:35:55,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:35:55,594 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:35:55,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:36:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:36:01,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 17360 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-29 02:36:01,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:36:01,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:36:01,911 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 19 treesize of output 11 [2023-11-29 02:36:01,995 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 19 treesize of output 11 [2023-11-29 02:36:02,078 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 19 treesize of output 11 [2023-11-29 02:36:02,163 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 19 treesize of output 11 [2023-11-29 02:36:02,249 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 19 treesize of output 11 [2023-11-29 02:36:02,337 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 19 treesize of output 11 [2023-11-29 02:36:02,430 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 19 treesize of output 11 [2023-11-29 02:36:02,525 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 19 treesize of output 11 [2023-11-29 02:36:02,621 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 19 treesize of output 11 [2023-11-29 02:36:02,712 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 19 treesize of output 11 [2023-11-29 02:36:02,923 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 19 treesize of output 11 [2023-11-29 02:36:03,022 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 19 treesize of output 11 [2023-11-29 02:36:03,120 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 19 treesize of output 11 [2023-11-29 02:36:03,220 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 19 treesize of output 11 [2023-11-29 02:36:03,319 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 19 treesize of output 11 [2023-11-29 02:36:03,419 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 19 treesize of output 11 [2023-11-29 02:36:03,523 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 19 treesize of output 11 [2023-11-29 02:36:03,633 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 19 treesize of output 11 [2023-11-29 02:36:03,743 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 19 treesize of output 11 [2023-11-29 02:36:03,861 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 19 treesize of output 11 [2023-11-29 02:36:03,972 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 19 treesize of output 11 [2023-11-29 02:36:04,087 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 19 treesize of output 11 [2023-11-29 02:36:04,192 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 19 treesize of output 11 [2023-11-29 02:36:04,308 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 19 treesize of output 11 [2023-11-29 02:36:04,419 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 19 treesize of output 11 [2023-11-29 02:36:04,533 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 19 treesize of output 11 [2023-11-29 02:36:04,659 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 19 treesize of output 11 [2023-11-29 02:36:04,774 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 19 treesize of output 11 [2023-11-29 02:36:04,900 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 19 treesize of output 11 [2023-11-29 02:36:05,019 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 19 treesize of output 11 [2023-11-29 02:36:05,138 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 19 treesize of output 11 [2023-11-29 02:36:05,245 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 19 treesize of output 11 [2023-11-29 02:36:05,368 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 19 treesize of output 11 [2023-11-29 02:36:05,484 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 19 treesize of output 11 [2023-11-29 02:36:05,599 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 19 treesize of output 11 [2023-11-29 02:36:05,719 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 19 treesize of output 11 [2023-11-29 02:36:05,831 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 19 treesize of output 11 [2023-11-29 02:36:05,948 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 19 treesize of output 11 [2023-11-29 02:36:06,060 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 19 treesize of output 11 [2023-11-29 02:36:06,171 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 19 treesize of output 11 [2023-11-29 02:36:06,293 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 19 treesize of output 11 [2023-11-29 02:36:06,413 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 19 treesize of output 11 [2023-11-29 02:36:06,527 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 19 treesize of output 11 [2023-11-29 02:36:06,648 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 19 treesize of output 11 [2023-11-29 02:36:06,761 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 19 treesize of output 11 [2023-11-29 02:36:06,868 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 19 treesize of output 11 [2023-11-29 02:36:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 78665 backedges. 0 proven. 78662 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:36:06,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:36:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 78665 backedges. 0 proven. 78662 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:36:13,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:36:13,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135769237] [2023-11-29 02:36:13,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:36:13,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020866924] [2023-11-29 02:36:13,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020866924] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:36:13,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:36:13,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2023-11-29 02:36:13,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534091107] [2023-11-29 02:36:13,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:36:13,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-11-29 02:36:13,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:36:13,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-11-29 02:36:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3487, Invalid=6215, Unknown=0, NotChecked=0, Total=9702 [2023-11-29 02:36:13,323 INFO L87 Difference]: Start difference. First operand 16090 states and 23299 transitions. Second operand has 99 states, 99 states have (on average 71.55555555555556) internal successors, (7084), 99 states have internal predecessors, (7084), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:37:25,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:37:25,561 INFO L93 Difference]: Finished difference Result 65499 states and 92055 transitions. [2023-11-29 02:37:25,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2023-11-29 02:37:25,563 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 71.55555555555556) internal successors, (7084), 99 states have internal predecessors, (7084), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 3584 [2023-11-29 02:37:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:37:25,637 INFO L225 Difference]: With dead ends: 65499 [2023-11-29 02:37:25,637 INFO L226 Difference]: Without dead ends: 65093 [2023-11-29 02:37:25,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7260 GetRequests, 7066 SyntacticMatches, 3 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5503 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=10491, Invalid=26565, Unknown=0, NotChecked=0, Total=37056 [2023-11-29 02:37:25,657 INFO L413 NwaCegarLoop]: 19592 mSDtfsCounter, 97555 mSDsluCounter, 946843 mSDsCounter, 0 mSdLazyCounter, 34098 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97833 SdHoareTripleChecker+Valid, 966435 SdHoareTripleChecker+Invalid, 34657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.7s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 34098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:37:25,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97833 Valid, 966435 Invalid, 34657 Unknown, 0 Unchecked, 2.7s Time], IncrementalHoareTripleChecker [559 Valid, 34098 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2023-11-29 02:37:25,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65093 states. [2023-11-29 02:37:26,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65093 to 32746. [2023-11-29 02:37:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32746 states, 32367 states have (on average 1.444094293570612) internal successors, (46741), 32368 states have internal predecessors, (46741), 375 states have call successors, (375), 2 states have call predecessors, (375), 2 states have return successors, (375), 375 states have call predecessors, (375), 375 states have call successors, (375) [2023-11-29 02:37:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32746 states to 32746 states and 47491 transitions. [2023-11-29 02:37:26,415 INFO L78 Accepts]: Start accepts. Automaton has 32746 states and 47491 transitions. Word has length 3584 [2023-11-29 02:37:26,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:37:26,418 INFO L495 AbstractCegarLoop]: Abstraction has 32746 states and 47491 transitions. [2023-11-29 02:37:26,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 71.55555555555556) internal successors, (7084), 99 states have internal predecessors, (7084), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 02:37:26,419 INFO L276 IsEmpty]: Start isEmpty. Operand 32746 states and 47491 transitions. [2023-11-29 02:37:26,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7233 [2023-11-29 02:37:26,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:37:26,830 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 93, 93, 93, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:37:26,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:37:27,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:37:27,030 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:37:27,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:37:27,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1299380723, now seen corresponding path program 2 times [2023-11-29 02:37:27,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:37:27,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509662904] [2023-11-29 02:37:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:37:27,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:37:29,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:37:29,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610324898] [2023-11-29 02:37:29,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:37:29,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:37:29,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:37:29,195 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:37:29,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:37:34,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 02:37:34,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:37:34,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 02:37:34,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:38:04,158 WARN L293 SmtUtils]: Spent 13.54s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 02:38:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 332201 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 332201 trivial. 0 not checked. [2023-11-29 02:38:04,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:38:04,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:04,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509662904] [2023-11-29 02:38:04,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:38:04,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610324898] [2023-11-29 02:38:04,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610324898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:04,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:04,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:38:04,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166605251] [2023-11-29 02:38:04,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:04,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:38:04,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:04,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:38:04,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2023-11-29 02:38:04,231 INFO L87 Difference]: Start difference. First operand 32746 states and 47491 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:38:08,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 02:38:14,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 02:38:18,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 02:38:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:19,780 INFO L93 Difference]: Finished difference Result 33103 states and 47979 transitions. [2023-11-29 02:38:19,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:38:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 7232 [2023-11-29 02:38:19,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:19,846 INFO L225 Difference]: With dead ends: 33103 [2023-11-29 02:38:19,846 INFO L226 Difference]: Without dead ends: 32761 [2023-11-29 02:38:19,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7232 GetRequests, 7226 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=15, Invalid=40, Unknown=1, NotChecked=0, Total=56 [2023-11-29 02:38:19,859 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 12 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:19,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2211 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 353 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2023-11-29 02:38:19,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32761 states. [2023-11-29 02:38:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32761 to 32740. [2023-11-29 02:38:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32740 states, 32361 states have (on average 1.4440839281851612) internal successors, (46732), 32362 states have internal predecessors, (46732), 375 states have call successors, (375), 2 states have call predecessors, (375), 2 states have return successors, (375), 375 states have call predecessors, (375), 375 states have call successors, (375) [2023-11-29 02:38:20,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32740 states to 32740 states and 47482 transitions. [2023-11-29 02:38:20,675 INFO L78 Accepts]: Start accepts. Automaton has 32740 states and 47482 transitions. Word has length 7232 [2023-11-29 02:38:20,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:20,682 INFO L495 AbstractCegarLoop]: Abstraction has 32740 states and 47482 transitions. [2023-11-29 02:38:20,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 02:38:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 32740 states and 47482 transitions. [2023-11-29 02:38:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7234 [2023-11-29 02:38:20,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:21,002 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 93, 93, 93, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:38:21,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 02:38:21,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:38:21,202 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:21,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2036875299, now seen corresponding path program 1 times [2023-11-29 02:38:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:21,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280473009] [2023-11-29 02:38:21,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:21,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:23,261 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:38:23,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66104107] [2023-11-29 02:38:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:23,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:38:23,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:38:23,262 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:38:23,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_667ca78a-6b68-437e-9c8f-905dd1335b0f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:38:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:35,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 35075 conjuncts, 192 conjunts are in the unsatisfiable core [2023-11-29 02:38:35,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:38:35,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 02:38:35,547 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 19 treesize of output 11 [2023-11-29 02:38:35,631 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 19 treesize of output 11 [2023-11-29 02:38:35,713 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 19 treesize of output 11 [2023-11-29 02:38:35,800 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 19 treesize of output 11 [2023-11-29 02:38:35,889 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 19 treesize of output 11 [2023-11-29 02:38:35,975 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 19 treesize of output 11 [2023-11-29 02:38:36,069 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 19 treesize of output 11 [2023-11-29 02:38:36,158 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 19 treesize of output 11 [2023-11-29 02:38:36,241 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 19 treesize of output 11 [2023-11-29 02:38:36,329 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 19 treesize of output 11 [2023-11-29 02:38:36,413 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 19 treesize of output 11 [2023-11-29 02:38:36,499 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 19 treesize of output 11 [2023-11-29 02:38:36,587 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 19 treesize of output 11 [2023-11-29 02:38:36,681 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 19 treesize of output 11 [2023-11-29 02:38:36,776 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 19 treesize of output 11 [2023-11-29 02:38:36,866 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 19 treesize of output 11 [2023-11-29 02:38:36,967 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 19 treesize of output 11 [2023-11-29 02:38:37,269 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 19 treesize of output 11 [2023-11-29 02:38:37,374 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 19 treesize of output 11 [2023-11-29 02:38:37,480 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 19 treesize of output 11 [2023-11-29 02:38:37,583 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 19 treesize of output 11 [2023-11-29 02:38:37,689 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 19 treesize of output 11 [2023-11-29 02:38:37,801 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 19 treesize of output 11 [2023-11-29 02:38:37,901 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 19 treesize of output 11 [2023-11-29 02:38:38,004 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 19 treesize of output 11 [2023-11-29 02:38:38,114 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 19 treesize of output 11 [2023-11-29 02:38:38,220 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 19 treesize of output 11 [2023-11-29 02:38:38,317 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 19 treesize of output 11 [2023-11-29 02:38:38,425 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 19 treesize of output 11 [2023-11-29 02:38:38,524 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 19 treesize of output 11 [2023-11-29 02:38:38,631 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 19 treesize of output 11 [2023-11-29 02:38:38,736 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 19 treesize of output 11 [2023-11-29 02:38:38,839 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 19 treesize of output 11 [2023-11-29 02:38:38,942 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 19 treesize of output 11 [2023-11-29 02:38:39,049 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 19 treesize of output 11 [2023-11-29 02:38:39,146 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 19 treesize of output 11 [2023-11-29 02:38:39,246 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 19 treesize of output 11 [2023-11-29 02:38:39,359 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 19 treesize of output 11 [2023-11-29 02:38:39,471 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 19 treesize of output 11 [2023-11-29 02:38:39,613 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 19 treesize of output 11 [2023-11-29 02:38:39,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 02:38:39,861 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 19 treesize of output 11 [2023-11-29 02:38:39,983 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 19 treesize of output 11 [2023-11-29 02:38:40,110 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 19 treesize of output 11 [2023-11-29 02:38:40,234 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 19 treesize of output 11 [2023-11-29 02:38:40,360 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 19 treesize of output 11 [2023-11-29 02:38:40,483 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 19 treesize of output 11 [2023-11-29 02:38:40,596 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 19 treesize of output 11 [2023-11-29 02:38:40,722 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 19 treesize of output 11 [2023-11-29 02:38:40,838 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 19 treesize of output 11 [2023-11-29 02:38:40,946 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 19 treesize of output 11 [2023-11-29 02:38:41,062 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 19 treesize of output 11 [2023-11-29 02:38:41,185 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 19 treesize of output 11 [2023-11-29 02:38:41,307 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 19 treesize of output 11 [2023-11-29 02:38:41,429 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 19 treesize of output 11 [2023-11-29 02:38:41,562 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 19 treesize of output 11 [2023-11-29 02:38:41,697 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 19 treesize of output 11 [2023-11-29 02:38:41,824 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 19 treesize of output 11 [2023-11-29 02:38:41,949 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 19 treesize of output 11 [2023-11-29 02:38:42,071 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 19 treesize of output 11 [2023-11-29 02:38:42,195 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 19 treesize of output 11 [2023-11-29 02:38:42,318 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 19 treesize of output 11 [2023-11-29 02:38:42,444 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 19 treesize of output 11 [2023-11-29 02:38:42,584 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 19 treesize of output 11 [2023-11-29 02:38:42,724 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 19 treesize of output 11 [2023-11-29 02:38:42,860 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 19 treesize of output 11 [2023-11-29 02:38:42,987 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 19 treesize of output 11 [2023-11-29 02:38:43,122 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 19 treesize of output 11 [2023-11-29 02:38:43,253 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 19 treesize of output 11 [2023-11-29 02:38:43,380 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 19 treesize of output 11 [2023-11-29 02:38:43,516 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 19 treesize of output 11 [2023-11-29 02:38:43,662 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 19 treesize of output 11 [2023-11-29 02:38:43,802 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 19 treesize of output 11 [2023-11-29 02:38:43,948 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 19 treesize of output 11 [2023-11-29 02:38:44,088 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 19 treesize of output 11 [2023-11-29 02:38:44,223 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 19 treesize of output 11 [2023-11-29 02:38:44,369 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 19 treesize of output 11 [2023-11-29 02:38:44,513 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 19 treesize of output 11 [2023-11-29 02:38:44,654 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 19 treesize of output 11 [2023-11-29 02:38:44,789 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 19 treesize of output 11 [2023-11-29 02:38:44,928 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 19 treesize of output 11 [2023-11-29 02:38:45,075 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 19 treesize of output 11 [2023-11-29 02:38:45,218 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 19 treesize of output 11 [2023-11-29 02:38:45,357 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 19 treesize of output 11 [2023-11-29 02:38:45,487 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 19 treesize of output 11 [2023-11-29 02:38:45,626 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 19 treesize of output 11 [2023-11-29 02:38:45,775 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 19 treesize of output 11 [2023-11-29 02:38:45,926 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 19 treesize of output 11 [2023-11-29 02:38:46,090 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 19 treesize of output 11 [2023-11-29 02:38:46,246 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 19 treesize of output 11 [2023-11-29 02:38:46,392 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 19 treesize of output 11 [2023-11-29 02:38:46,541 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 19 treesize of output 11 [2023-11-29 02:38:46,683 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 19 treesize of output 11 [2023-11-29 02:38:46,831 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 19 treesize of output 11 [2023-11-29 02:38:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 332201 backedges. 0 proven. 332198 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:38:47,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:39:04,538 INFO L134 CoverageAnalysis]: Checked inductivity of 332201 backedges. 0 proven. 332198 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:39:04,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:04,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280473009] [2023-11-29 02:39:04,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:39:04,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66104107] [2023-11-29 02:39:04,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66104107] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:39:04,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:39:04,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2023-11-29 02:39:04,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752158189] [2023-11-29 02:39:04,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:39:04,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 195 states [2023-11-29 02:39:04,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2023-11-29 02:39:04,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13879, Invalid=23951, Unknown=0, NotChecked=0, Total=37830 [2023-11-29 02:39:04,574 INFO L87 Difference]: Start difference. First operand 32740 states and 47482 transitions. Second operand has 195 states, 195 states have (on average 73.74871794871795) internal successors, (14381), 195 states have internal predecessors, (14381), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)