./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.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_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI --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 e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:45:24,761 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:45:24,897 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:45:24,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:45:24,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:45:24,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:45:24,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:45:24,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:45:24,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:45:24,964 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:45:24,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:45:24,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:45:24,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:45:24,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:45:24,969 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:45:24,970 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:45:24,970 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:45:24,970 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:45:24,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:45:24,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:45:24,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:45:24,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:45:24,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:45:24,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:45:24,974 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:45:24,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:45:24,975 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:45:24,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:45:24,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:45:24,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:45:24,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:45:24,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:45:24,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:45:24,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:45:24,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:45:24,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:45:24,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:45:24,981 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:45:24,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:45:24,981 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:45:24,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:45:24,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:45:24,982 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_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2023-11-24 21:45:25,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:45:25,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:45:25,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:45:25,282 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:45:25,283 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:45:25,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2023-11-24 21:45:28,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:45:28,767 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:45:28,768 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2023-11-24 21:45:28,788 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/data/67ea7a4b5/65f87701ebdc424d8853162ba521c330/FLAG31e8505f4 [2023-11-24 21:45:28,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/data/67ea7a4b5/65f87701ebdc424d8853162ba521c330 [2023-11-24 21:45:28,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:45:28,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:45:28,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:45:28,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:45:28,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:45:28,823 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:45:28" (1/1) ... [2023-11-24 21:45:28,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d53cbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:28, skipping insertion in model container [2023-11-24 21:45:28,824 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:45:28" (1/1) ... [2023-11-24 21:45:28,912 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:45:29,464 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_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i[37435,37448] [2023-11-24 21:45:29,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:45:29,607 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:45:29,671 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_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i[37435,37448] [2023-11-24 21:45:29,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:45:29,836 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:45:29,847 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:45:29,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29 WrapperNode [2023-11-24 21:45:29,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:45:29,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:45:29,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:45:29,851 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:45:29,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:29,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,046 INFO L138 Inliner]: procedures = 207, calls = 229, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1184 [2023-11-24 21:45:30,047 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:45:30,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:45:30,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:45:30,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:45:30,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,168 INFO L175 MemorySlicer]: Split 211 memory accesses to 4 slices as follows [2, 34, 5, 170]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 47 writes are split as follows [0, 4, 1, 42]. [2023-11-24 21:45:30,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,169 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,211 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,226 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:45:30,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:45:30,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:45:30,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:45:30,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (1/1) ... [2023-11-24 21:45:30,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:45:30,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:45:30,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:45:30,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:45:30,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-24 21:45:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-24 21:45:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-24 21:45:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-24 21:45:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-24 21:45:30,350 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-24 21:45:30,351 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-24 21:45:30,352 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-24 21:45:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:45:30,353 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 21:45:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:45:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:45:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:45:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-24 21:45:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:45:30,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:45:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:45:30,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:45:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:45:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:45:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:45:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:45:30,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:45:30,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:45:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:45:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:45:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:45:30,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:45:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-24 21:45:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:45:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:45:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:45:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:45:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:45:30,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:45:30,694 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:45:30,697 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:45:32,462 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:45:32,511 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:45:32,511 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-24 21:45:32,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:45:32 BoogieIcfgContainer [2023-11-24 21:45:32,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:45:32,519 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:45:32,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:45:32,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:45:32,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:45:28" (1/3) ... [2023-11-24 21:45:32,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202217db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:45:32, skipping insertion in model container [2023-11-24 21:45:32,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:29" (2/3) ... [2023-11-24 21:45:32,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202217db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:45:32, skipping insertion in model container [2023-11-24 21:45:32,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:45:32" (3/3) ... [2023-11-24 21:45:32,531 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test2-1.i [2023-11-24 21:45:32,555 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:45:32,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:45:32,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:45:32,657 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;@4a0ba74d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:45:32,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:45:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 321 states, 315 states have (on average 1.7079365079365079) internal successors, (538), 316 states have internal predecessors, (538), 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) [2023-11-24 21:45:32,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 21:45:32,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:32,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:32,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:45:32,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1774755441, now seen corresponding path program 1 times [2023-11-24 21:45:32,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:32,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029002731] [2023-11-24 21:45:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:32,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:32,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029002731] [2023-11-24 21:45:32,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029002731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:32,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:32,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:45:32,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126153443] [2023-11-24 21:45:32,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:32,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:45:32,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:32,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:45:32,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:45:32,956 INFO L87 Difference]: Start difference. First operand has 321 states, 315 states have (on average 1.7079365079365079) internal successors, (538), 316 states have internal predecessors, (538), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-11-24 21:45:33,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:33,060 INFO L93 Difference]: Finished difference Result 640 states and 1085 transitions. [2023-11-24 21:45:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:45:33,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2023-11-24 21:45:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:33,088 INFO L225 Difference]: With dead ends: 640 [2023-11-24 21:45:33,088 INFO L226 Difference]: Without dead ends: 318 [2023-11-24 21:45:33,097 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 [2023-11-24 21:45:33,102 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:33,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:45:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-24 21:45:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-11-24 21:45:33,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 313 states have (on average 1.5175718849840256) internal successors, (475), 313 states have internal predecessors, (475), 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) [2023-11-24 21:45:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 481 transitions. [2023-11-24 21:45:33,235 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 481 transitions. Word has length 10 [2023-11-24 21:45:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:33,236 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 481 transitions. [2023-11-24 21:45:33,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-11-24 21:45:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 481 transitions. [2023-11-24 21:45:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-24 21:45:33,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:33,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:33,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:45:33,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:45:33,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:33,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1525889260, now seen corresponding path program 1 times [2023-11-24 21:45:33,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:33,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696097022] [2023-11-24 21:45:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:33,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:33,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:33,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696097022] [2023-11-24 21:45:33,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696097022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:33,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:33,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:45:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389892761] [2023-11-24 21:45:33,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:33,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:33,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:33,740 INFO L87 Difference]: Start difference. First operand 318 states and 481 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-24 21:45:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:33,995 INFO L93 Difference]: Finished difference Result 461 states and 699 transitions. [2023-11-24 21:45:33,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:45:33,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2023-11-24 21:45:33,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:34,000 INFO L225 Difference]: With dead ends: 461 [2023-11-24 21:45:34,001 INFO L226 Difference]: Without dead ends: 322 [2023-11-24 21:45:34,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:45:34,003 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 165 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:34,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1201 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:45:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-24 21:45:34,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 318. [2023-11-24 21:45:34,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 313 states have (on average 1.4952076677316295) internal successors, (468), 313 states have internal predecessors, (468), 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) [2023-11-24 21:45:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 474 transitions. [2023-11-24 21:45:34,033 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 474 transitions. Word has length 65 [2023-11-24 21:45:34,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:34,034 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 474 transitions. [2023-11-24 21:45:34,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-24 21:45:34,034 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 474 transitions. [2023-11-24 21:45:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-24 21:45:34,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:34,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:34,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:45:34,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:45:34,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash -901149832, now seen corresponding path program 1 times [2023-11-24 21:45:34,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:34,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060639395] [2023-11-24 21:45:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:34,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:34,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:34,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060639395] [2023-11-24 21:45:34,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060639395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:34,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:34,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:45:34,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360372413] [2023-11-24 21:45:34,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:34,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:45:34,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:34,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:45:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:45:34,912 INFO L87 Difference]: Start difference. First operand 318 states and 474 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2023-11-24 21:45:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:35,212 INFO L93 Difference]: Finished difference Result 772 states and 1152 transitions. [2023-11-24 21:45:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:45:35,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 65 [2023-11-24 21:45:35,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:35,221 INFO L225 Difference]: With dead ends: 772 [2023-11-24 21:45:35,222 INFO L226 Difference]: Without dead ends: 630 [2023-11-24 21:45:35,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:45:35,228 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 460 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:35,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 2735 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:45:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-11-24 21:45:35,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 320. [2023-11-24 21:45:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.492063492063492) internal successors, (470), 315 states have internal predecessors, (470), 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) [2023-11-24 21:45:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 476 transitions. [2023-11-24 21:45:35,277 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 476 transitions. Word has length 65 [2023-11-24 21:45:35,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:35,278 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 476 transitions. [2023-11-24 21:45:35,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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) [2023-11-24 21:45:35,278 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 476 transitions. [2023-11-24 21:45:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-24 21:45:35,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:35,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:35,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:45:35,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:45:35,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:35,294 INFO L85 PathProgramCache]: Analyzing trace with hash 337027236, now seen corresponding path program 1 times [2023-11-24 21:45:35,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:35,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483210686] [2023-11-24 21:45:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:35,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:35,392 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:45:35,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171545935] [2023-11-24 21:45:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:35,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:45:35,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:45:35,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:45:35,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:45:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:35,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:45:35,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:35,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:35,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:35,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483210686] [2023-11-24 21:45:35,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:45:35,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171545935] [2023-11-24 21:45:35,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171545935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:35,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:35,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:45:35,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897419917] [2023-11-24 21:45:35,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:35,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:45:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:35,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:45:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:35,918 INFO L87 Difference]: Start difference. First operand 320 states and 476 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-11-24 21:45:36,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:36,034 INFO L93 Difference]: Finished difference Result 657 states and 979 transitions. [2023-11-24 21:45:36,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:36,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 141 [2023-11-24 21:45:36,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:36,039 INFO L225 Difference]: With dead ends: 657 [2023-11-24 21:45:36,040 INFO L226 Difference]: Without dead ends: 341 [2023-11-24 21:45:36,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:36,050 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 10 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:36,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 888 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:45:36,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-24 21:45:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 340. [2023-11-24 21:45:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 335 states have (on average 1.462686567164179) internal successors, (490), 335 states have internal predecessors, (490), 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) [2023-11-24 21:45:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 496 transitions. [2023-11-24 21:45:36,069 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 496 transitions. Word has length 141 [2023-11-24 21:45:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:36,071 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 496 transitions. [2023-11-24 21:45:36,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2023-11-24 21:45:36,072 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 496 transitions. [2023-11-24 21:45:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-24 21:45:36,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:36,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:36,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:36,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:45:36,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:45:36,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1241817688, now seen corresponding path program 1 times [2023-11-24 21:45:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239818795] [2023-11-24 21:45:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:36,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:36,371 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:45:36,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090383384] [2023-11-24 21:45:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:36,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:45:36,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:45:36,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:45:36,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:45:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:36,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:45:36,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:36,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:36,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:36,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239818795] [2023-11-24 21:45:36,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:45:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090383384] [2023-11-24 21:45:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090383384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:36,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:36,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:45:36,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026612587] [2023-11-24 21:45:36,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:36,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:36,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:36,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:36,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:36,818 INFO L87 Difference]: Start difference. First operand 340 states and 496 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-11-24 21:45:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:36,950 INFO L93 Difference]: Finished difference Result 663 states and 975 transitions. [2023-11-24 21:45:36,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:45:36,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 141 [2023-11-24 21:45:36,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:36,955 INFO L225 Difference]: With dead ends: 663 [2023-11-24 21:45:36,955 INFO L226 Difference]: Without dead ends: 327 [2023-11-24 21:45:36,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:45:36,957 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 165 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:36,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1180 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:45:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-11-24 21:45:36,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 326. [2023-11-24 21:45:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 321 states have (on average 1.4610591900311527) internal successors, (469), 321 states have internal predecessors, (469), 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) [2023-11-24 21:45:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 475 transitions. [2023-11-24 21:45:36,972 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 475 transitions. Word has length 141 [2023-11-24 21:45:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:36,973 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 475 transitions. [2023-11-24 21:45:36,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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) [2023-11-24 21:45:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 475 transitions. [2023-11-24 21:45:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-24 21:45:36,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:36,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:36,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:37,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:45:37,189 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:45:37,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1324602150, now seen corresponding path program 1 times [2023-11-24 21:45:37,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:37,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117603214] [2023-11-24 21:45:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:37,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:37,260 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:45:37,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142906207] [2023-11-24 21:45:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:37,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:45:37,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:45:37,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:45:37,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 21:45:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:37,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:45:37,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:38,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:38,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:38,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117603214] [2023-11-24 21:45:38,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:45:38,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142906207] [2023-11-24 21:45:38,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142906207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:38,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:38,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:45:38,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699913315] [2023-11-24 21:45:38,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:38,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:45:38,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:38,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:45:38,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:38,066 INFO L87 Difference]: Start difference. First operand 326 states and 475 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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) [2023-11-24 21:45:38,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:38,187 INFO L93 Difference]: Finished difference Result 884 states and 1302 transitions. [2023-11-24 21:45:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:38,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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 141 [2023-11-24 21:45:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:38,193 INFO L225 Difference]: With dead ends: 884 [2023-11-24 21:45:38,193 INFO L226 Difference]: Without dead ends: 562 [2023-11-24 21:45:38,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:38,195 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 300 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:38,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1074 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:45:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-24 21:45:38,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 560. [2023-11-24 21:45:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 555 states have (on average 1.481081081081081) internal successors, (822), 555 states have internal predecessors, (822), 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) [2023-11-24 21:45:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 828 transitions. [2023-11-24 21:45:38,221 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 828 transitions. Word has length 141 [2023-11-24 21:45:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:38,222 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 828 transitions. [2023-11-24 21:45:38,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 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) [2023-11-24 21:45:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 828 transitions. [2023-11-24 21:45:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-24 21:45:38,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:38,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:38,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:38,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 21:45:38,436 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:45:38,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:38,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1198664639, now seen corresponding path program 1 times [2023-11-24 21:45:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:38,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092658917] [2023-11-24 21:45:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:38,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:38,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:45:38,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684795966] [2023-11-24 21:45:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:38,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:45:38,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:45:38,544 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:45:38,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 21:45:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:39,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 21:45:39,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 21:45:39,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:45:39,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:39,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092658917] [2023-11-24 21:45:39,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:45:39,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684795966] [2023-11-24 21:45:39,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684795966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:39,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:39,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:45:39,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074544419] [2023-11-24 21:45:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:39,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:39,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:39,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:39,418 INFO L87 Difference]: Start difference. First operand 560 states and 828 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) [2023-11-24 21:45:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:45:39,733 INFO L93 Difference]: Finished difference Result 882 states and 1299 transitions. [2023-11-24 21:45:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:45:39,735 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 154 [2023-11-24 21:45:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:45:39,741 INFO L225 Difference]: With dead ends: 882 [2023-11-24 21:45:39,741 INFO L226 Difference]: Without dead ends: 443 [2023-11-24 21:45:39,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:45:39,743 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 767 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:45:39,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 777 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:45:39,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-24 21:45:39,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2023-11-24 21:45:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 438 states have (on average 1.4680365296803652) internal successors, (643), 438 states have internal predecessors, (643), 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) [2023-11-24 21:45:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 649 transitions. [2023-11-24 21:45:39,772 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 649 transitions. Word has length 154 [2023-11-24 21:45:39,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:45:39,775 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 649 transitions. [2023-11-24 21:45:39,775 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) [2023-11-24 21:45:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 649 transitions. [2023-11-24 21:45:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-24 21:45:39,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:45:39,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:39,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:45:39,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:45:39,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:45:39,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:39,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1290759316, now seen corresponding path program 1 times [2023-11-24 21:45:39,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:39,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890182588] [2023-11-24 21:45:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:40,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:45:40,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136932808] [2023-11-24 21:45:40,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:40,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:45:40,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:45:40,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:45:40,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0a24d1e-3a3e-49b9-ac5d-ca8bcd741157/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 21:45:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:40,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-24 21:45:40,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:45:40,609 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 [2023-11-24 21:45:40,629 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 7 treesize of output 3 [2023-11-24 21:45:40,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-24 21:45:41,271 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 [2023-11-24 21:45:41,309 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-11-24 21:45:41,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2023-11-24 21:45:41,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2023-11-24 21:45:41,426 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 26 treesize of output 14 [2023-11-24 21:45:41,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-24 21:45:48,687 INFO L224 Elim1Store]: Index analysis took 353 ms