./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad1bbae792ec9c8e2e546dc04f3672720af98ce14b9bd37d0d7647e79ce45565 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:10:29,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:10:29,468 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 07:10:29,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:10:29,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:10:29,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:10:29,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:10:29,502 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:10:29,502 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:10:29,503 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:10:29,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:10:29,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:10:29,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:10:29,506 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:10:29,507 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:10:29,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:10:29,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 07:10:29,509 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:10:29,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:10:29,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:10:29,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:10:29,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 07:10:29,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:10:29,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 07:10:29,513 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:10:29,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:10:29,515 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:10:29,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:10:29,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:10:29,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:10:29,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:10:29,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:10:29,518 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:10:29,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:10:29,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 07:10:29,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:10:29,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:10:29,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:10:29,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:10:29,520 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 07:10:29,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:10:29,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:10:29,520 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_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad1bbae792ec9c8e2e546dc04f3672720af98ce14b9bd37d0d7647e79ce45565 [2023-11-29 07:10:29,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:10:29,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:10:29,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:10:29,808 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:10:29,808 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:10:29,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i [2023-11-29 07:10:33,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:10:33,370 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:10:33,370 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i [2023-11-29 07:10:33,393 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/data/4816161ff/2a020c03fdb849d5a1567251c039e889/FLAG6e78ce083 [2023-11-29 07:10:33,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/data/4816161ff/2a020c03fdb849d5a1567251c039e889 [2023-11-29 07:10:33,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:10:33,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:10:33,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:10:33,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:10:33,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:10:33,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:10:33" (1/1) ... [2023-11-29 07:10:33,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1077d367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:33, skipping insertion in model container [2023-11-29 07:10:33,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:10:33" (1/1) ... [2023-11-29 07:10:33,501 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:10:34,017 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_d30468f6-1b6f-40ce-9e55-a75e873ca15c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[33021,33034] [2023-11-29 07:10:34,162 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_d30468f6-1b6f-40ce-9e55-a75e873ca15c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[49681,49694] [2023-11-29 07:10:34,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:10:34,189 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:10:34,219 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_d30468f6-1b6f-40ce-9e55-a75e873ca15c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[33021,33034] [2023-11-29 07:10:34,293 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_d30468f6-1b6f-40ce-9e55-a75e873ca15c/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-2.i[49681,49694] [2023-11-29 07:10:34,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:10:34,343 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 07:10:34,353 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:10:34,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34 WrapperNode [2023-11-29 07:10:34,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:10:34,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:10:34,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:10:34,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:10:34,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,513 INFO L138 Inliner]: procedures = 177, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2060 [2023-11-29 07:10:34,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:10:34,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:10:34,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:10:34,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:10:34,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,778 INFO L175 MemorySlicer]: Split 407 memory accesses to 5 slices as follows [2, 5, 24, 5, 371]. 91 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 93 writes are split as follows [0, 1, 1, 1, 90]. [2023-11-29 07:10:34,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,835 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:10:34,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:10:34,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:10:34,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:10:34,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (1/1) ... [2023-11-29 07:10:34,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:10:34,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:34,928 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:10:34,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:10:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 07:10:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 07:10:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 07:10:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 07:10:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 07:10:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 07:10:34,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 07:10:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 07:10:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 07:10:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 07:10:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 07:10:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 07:10:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 07:10:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 07:10:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 07:10:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 07:10:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-29 07:10:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 07:10:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 07:10:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 07:10:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 07:10:34,981 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-29 07:10:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 07:10:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:10:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 07:10:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 07:10:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 07:10:34,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 07:10:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 07:10:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 07:10:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 07:10:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 07:10:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 07:10:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 07:10:34,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 07:10:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 07:10:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 07:10:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:10:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 07:10:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 07:10:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 07:10:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 07:10:34,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:10:34,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:10:35,290 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:10:35,293 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:10:37,544 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:10:37,605 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:10:37,606 INFO L309 CfgBuilder]: Removed 92 assume(true) statements. [2023-11-29 07:10:37,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:37 BoogieIcfgContainer [2023-11-29 07:10:37,607 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:10:37,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:10:37,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:10:37,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:10:37,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:10:33" (1/3) ... [2023-11-29 07:10:37,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6066da90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:10:37, skipping insertion in model container [2023-11-29 07:10:37,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:34" (2/3) ... [2023-11-29 07:10:37,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6066da90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:10:37, skipping insertion in model container [2023-11-29 07:10:37,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:37" (3/3) ... [2023-11-29 07:10:37,617 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-2.i [2023-11-29 07:10:37,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:10:37,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 07:10:37,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:10:37,709 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;@60a44da6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:10:37,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 07:10:37,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 534 states, 518 states have (on average 1.7084942084942085) internal successors, (885), 525 states have internal predecessors, (885), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 07:10:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 07:10:37,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:37,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:37,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:37,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:37,731 INFO L85 PathProgramCache]: Analyzing trace with hash 797808273, now seen corresponding path program 1 times [2023-11-29 07:10:37,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:37,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113694523] [2023-11-29 07:10:37,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:37,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:37,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:37,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113694523] [2023-11-29 07:10:37,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 07:10:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157805595] [2023-11-29 07:10:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:37,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:37,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:37,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:37,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 07:10:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:38,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 07:10:38,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:38,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:38,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157805595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:38,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:38,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:10:38,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928621524] [2023-11-29 07:10:38,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:38,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 07:10:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:38,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 07:10:38,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:10:38,225 INFO L87 Difference]: Start difference. First operand has 534 states, 518 states have (on average 1.7084942084942085) internal successors, (885), 525 states have internal predecessors, (885), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:38,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:38,349 INFO L93 Difference]: Finished difference Result 1067 states and 1818 transitions. [2023-11-29 07:10:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 07:10:38,352 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 07:10:38,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:38,371 INFO L225 Difference]: With dead ends: 1067 [2023-11-29 07:10:38,371 INFO L226 Difference]: Without dead ends: 499 [2023-11-29 07:10:38,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 07:10:38,381 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:38,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 801 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:10:38,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-11-29 07:10:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2023-11-29 07:10:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 484 states have (on average 1.5206611570247934) internal successors, (736), 490 states have internal predecessors, (736), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 07:10:38,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 758 transitions. [2023-11-29 07:10:38,464 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 758 transitions. Word has length 7 [2023-11-29 07:10:38,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:38,465 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 758 transitions. [2023-11-29 07:10:38,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:38,465 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 758 transitions. [2023-11-29 07:10:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 07:10:38,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:38,469 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] [2023-11-29 07:10:38,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:10:38,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 07:10:38,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:38,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:38,671 INFO L85 PathProgramCache]: Analyzing trace with hash -678395044, now seen corresponding path program 1 times [2023-11-29 07:10:38,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:38,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82535760] [2023-11-29 07:10:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:38,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:38,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:38,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82535760] [2023-11-29 07:10:38,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 07:10:38,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100978241] [2023-11-29 07:10:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:38,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:38,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:38,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:38,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 07:10:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:39,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:10:39,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:39,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:39,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:39,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100978241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:39,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:39,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:10:39,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479798750] [2023-11-29 07:10:39,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:39,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:10:39,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:10:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:10:39,080 INFO L87 Difference]: Start difference. First operand 499 states and 758 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:39,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:39,177 INFO L93 Difference]: Finished difference Result 1142 states and 1745 transitions. [2023-11-29 07:10:39,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:10:39,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2023-11-29 07:10:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:39,186 INFO L225 Difference]: With dead ends: 1142 [2023-11-29 07:10:39,187 INFO L226 Difference]: Without dead ends: 987 [2023-11-29 07:10:39,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:10:39,189 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 723 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:39,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1542 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 07:10:39,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2023-11-29 07:10:39,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 500. [2023-11-29 07:10:39,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 485 states have (on average 1.5195876288659793) internal successors, (737), 491 states have internal predecessors, (737), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 07:10:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 759 transitions. [2023-11-29 07:10:39,230 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 759 transitions. Word has length 61 [2023-11-29 07:10:39,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:39,230 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 759 transitions. [2023-11-29 07:10:39,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:39,231 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 759 transitions. [2023-11-29 07:10:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 07:10:39,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:39,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:39,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 07:10:39,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:39,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:39,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1776657087, now seen corresponding path program 1 times [2023-11-29 07:10:39,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:39,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712883245] [2023-11-29 07:10:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:39,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:39,589 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:39,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738353362] [2023-11-29 07:10:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:39,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:39,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:39,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:39,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 07:10:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:40,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:10:40,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:40,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:40,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:40,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:40,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712883245] [2023-11-29 07:10:40,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:40,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738353362] [2023-11-29 07:10:40,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738353362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:40,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:40,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:10:40,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942449715] [2023-11-29 07:10:40,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:40,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:10:40,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:40,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:10:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:10:40,198 INFO L87 Difference]: Start difference. First operand 500 states and 759 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:40,327 INFO L93 Difference]: Finished difference Result 1019 states and 1547 transitions. [2023-11-29 07:10:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:10:40,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 207 [2023-11-29 07:10:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:40,333 INFO L225 Difference]: With dead ends: 1019 [2023-11-29 07:10:40,333 INFO L226 Difference]: Without dead ends: 521 [2023-11-29 07:10:40,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:10:40,336 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 9 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1456 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 [2023-11-29 07:10:40,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1456 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:10:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2023-11-29 07:10:40,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 520. [2023-11-29 07:10:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 505 states have (on average 1.499009900990099) internal successors, (757), 511 states have internal predecessors, (757), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 07:10:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 779 transitions. [2023-11-29 07:10:40,367 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 779 transitions. Word has length 207 [2023-11-29 07:10:40,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:40,368 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 779 transitions. [2023-11-29 07:10:40,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:40,368 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 779 transitions. [2023-11-29 07:10:40,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 07:10:40,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:40,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:40,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 07:10:40,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:40,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:40,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1289583361, now seen corresponding path program 1 times [2023-11-29 07:10:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:40,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092932862] [2023-11-29 07:10:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:40,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:40,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:40,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545952581] [2023-11-29 07:10:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:40,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:40,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:40,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:40,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 07:10:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:41,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:10:41,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:41,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:41,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092932862] [2023-11-29 07:10:41,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545952581] [2023-11-29 07:10:41,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545952581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:41,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:41,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:10:41,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607659298] [2023-11-29 07:10:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:41,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:10:41,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:10:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:10:41,229 INFO L87 Difference]: Start difference. First operand 520 states and 779 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:41,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:41,349 INFO L93 Difference]: Finished difference Result 1059 states and 1587 transitions. [2023-11-29 07:10:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:10:41,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 207 [2023-11-29 07:10:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:41,358 INFO L225 Difference]: With dead ends: 1059 [2023-11-29 07:10:41,358 INFO L226 Difference]: Without dead ends: 541 [2023-11-29 07:10:41,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:10:41,361 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 9 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1456 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 [2023-11-29 07:10:41,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1456 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:10:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-11-29 07:10:41,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 540. [2023-11-29 07:10:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 525 states have (on average 1.48) internal successors, (777), 531 states have internal predecessors, (777), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 07:10:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 799 transitions. [2023-11-29 07:10:41,385 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 799 transitions. Word has length 207 [2023-11-29 07:10:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:41,386 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 799 transitions. [2023-11-29 07:10:41,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 799 transitions. [2023-11-29 07:10:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 07:10:41,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:41,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:41,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 07:10:41,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:41,598 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:41,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1358020993, now seen corresponding path program 1 times [2023-11-29 07:10:41,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:41,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536653631] [2023-11-29 07:10:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:41,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:41,710 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:41,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801108044] [2023-11-29 07:10:41,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:41,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:41,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:41,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:41,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 07:10:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:42,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:10:42,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 07:10:42,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:42,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536653631] [2023-11-29 07:10:42,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801108044] [2023-11-29 07:10:42,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801108044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:42,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:42,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:10:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12120046] [2023-11-29 07:10:42,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:42,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:10:42,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:10:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:10:42,310 INFO L87 Difference]: Start difference. First operand 540 states and 799 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:42,410 INFO L93 Difference]: Finished difference Result 715 states and 1068 transitions. [2023-11-29 07:10:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:10:42,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 207 [2023-11-29 07:10:42,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:42,416 INFO L225 Difference]: With dead ends: 715 [2023-11-29 07:10:42,416 INFO L226 Difference]: Without dead ends: 561 [2023-11-29 07:10:42,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:10:42,418 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 9 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1456 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 [2023-11-29 07:10:42,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1456 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:10:42,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-11-29 07:10:42,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 560. [2023-11-29 07:10:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 545 states have (on average 1.4623853211009175) internal successors, (797), 551 states have internal predecessors, (797), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 07:10:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 819 transitions. [2023-11-29 07:10:42,437 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 819 transitions. Word has length 207 [2023-11-29 07:10:42,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:42,438 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 819 transitions. [2023-11-29 07:10:42,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 819 transitions. [2023-11-29 07:10:42,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 07:10:42,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:42,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:42,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 07:10:42,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:42,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:42,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:42,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1053199741, now seen corresponding path program 1 times [2023-11-29 07:10:42,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:42,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576003985] [2023-11-29 07:10:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:42,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:42,731 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:42,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550951682] [2023-11-29 07:10:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:42,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:42,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:42,733 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:42,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 07:10:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:43,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:10:43,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:43,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:43,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576003985] [2023-11-29 07:10:43,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:43,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550951682] [2023-11-29 07:10:43,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550951682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:43,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:43,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:10:43,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935565] [2023-11-29 07:10:43,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:43,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:10:43,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:43,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:10:43,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:10:43,288 INFO L87 Difference]: Start difference. First operand 560 states and 819 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:43,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:43,412 INFO L93 Difference]: Finished difference Result 1105 states and 1623 transitions. [2023-11-29 07:10:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:10:43,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 207 [2023-11-29 07:10:43,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:43,417 INFO L225 Difference]: With dead ends: 1105 [2023-11-29 07:10:43,417 INFO L226 Difference]: Without dead ends: 547 [2023-11-29 07:10:43,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:10:43,420 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 165 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2032 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 [2023-11-29 07:10:43,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2032 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:10:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-11-29 07:10:43,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 546. [2023-11-29 07:10:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 531 states have (on average 1.4613935969868173) internal successors, (776), 537 states have internal predecessors, (776), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 07:10:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 798 transitions. [2023-11-29 07:10:43,444 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 798 transitions. Word has length 207 [2023-11-29 07:10:43,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:43,445 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 798 transitions. [2023-11-29 07:10:43,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 798 transitions. [2023-11-29 07:10:43,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 07:10:43,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:43,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:43,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 07:10:43,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:43,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:43,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1228982453, now seen corresponding path program 1 times [2023-11-29 07:10:43,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:43,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101095739] [2023-11-29 07:10:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:43,725 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:43,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541096569] [2023-11-29 07:10:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:43,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:43,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:43,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:43,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:10:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:44,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:10:44,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:44,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:44,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:44,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101095739] [2023-11-29 07:10:44,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:44,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541096569] [2023-11-29 07:10:44,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541096569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:44,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:44,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:10:44,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139722224] [2023-11-29 07:10:44,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:44,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:10:44,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:44,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:10:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:10:44,347 INFO L87 Difference]: Start difference. First operand 546 states and 798 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:44,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:44,472 INFO L93 Difference]: Finished difference Result 1077 states and 1581 transitions. [2023-11-29 07:10:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:10:44,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 207 [2023-11-29 07:10:44,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:44,478 INFO L225 Difference]: With dead ends: 1077 [2023-11-29 07:10:44,478 INFO L226 Difference]: Without dead ends: 533 [2023-11-29 07:10:44,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:10:44,481 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 165 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2011 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 [2023-11-29 07:10:44,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2011 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:10:44,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-11-29 07:10:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 532. [2023-11-29 07:10:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 517 states have (on average 1.460348162475822) internal successors, (755), 523 states have internal predecessors, (755), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 07:10:44,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 777 transitions. [2023-11-29 07:10:44,508 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 777 transitions. Word has length 207 [2023-11-29 07:10:44,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:44,509 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 777 transitions. [2023-11-29 07:10:44,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 777 transitions. [2023-11-29 07:10:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 07:10:44,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:44,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:44,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:10:44,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:44,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:44,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash 362518211, now seen corresponding path program 1 times [2023-11-29 07:10:44,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:44,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228311107] [2023-11-29 07:10:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:44,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:44,814 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:44,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301491153] [2023-11-29 07:10:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:44,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:44,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:44,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:44,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 07:10:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:45,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:10:45,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 07:10:45,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:45,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:45,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228311107] [2023-11-29 07:10:45,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:45,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301491153] [2023-11-29 07:10:45,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301491153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:45,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:45,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 07:10:45,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520618250] [2023-11-29 07:10:45,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:45,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:10:45,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:10:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:10:45,321 INFO L87 Difference]: Start difference. First operand 532 states and 777 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:45,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:45,423 INFO L93 Difference]: Finished difference Result 693 states and 1022 transitions. [2023-11-29 07:10:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:10:45,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 207 [2023-11-29 07:10:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:45,428 INFO L225 Difference]: With dead ends: 693 [2023-11-29 07:10:45,428 INFO L226 Difference]: Without dead ends: 519 [2023-11-29 07:10:45,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 07:10:45,430 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 165 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1990 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 [2023-11-29 07:10:45,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1990 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:10:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-11-29 07:10:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 518. [2023-11-29 07:10:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 503 states have (on average 1.459244532803181) internal successors, (734), 509 states have internal predecessors, (734), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 07:10:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 756 transitions. [2023-11-29 07:10:45,446 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 756 transitions. Word has length 207 [2023-11-29 07:10:45,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:45,447 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 756 transitions. [2023-11-29 07:10:45,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:45,447 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 756 transitions. [2023-11-29 07:10:45,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-29 07:10:45,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:45,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:45,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 07:10:45,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:45,651 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:45,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:45,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2114164085, now seen corresponding path program 1 times [2023-11-29 07:10:45,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:45,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215060741] [2023-11-29 07:10:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:45,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:45,743 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:45,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591290623] [2023-11-29 07:10:45,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:45,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:45,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:45,746 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:45,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 07:10:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:46,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:10:46,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:46,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:46,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:46,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215060741] [2023-11-29 07:10:46,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:46,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591290623] [2023-11-29 07:10:46,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591290623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:46,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:10:46,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 07:10:46,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790377668] [2023-11-29 07:10:46,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:46,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:10:46,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:46,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:10:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:10:46,842 INFO L87 Difference]: Start difference. First operand 518 states and 756 transitions. Second operand has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:47,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:47,089 INFO L93 Difference]: Finished difference Result 2043 states and 2997 transitions. [2023-11-29 07:10:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:10:47,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 5 states have internal predecessors, (355), 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 207 [2023-11-29 07:10:47,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:47,104 INFO L225 Difference]: With dead ends: 2043 [2023-11-29 07:10:47,104 INFO L226 Difference]: Without dead ends: 1882 [2023-11-29 07:10:47,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:10:47,106 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 2820 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2859 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:47,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2859 Valid, 2746 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 07:10:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2023-11-29 07:10:47,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1574. [2023-11-29 07:10:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1541 states have (on average 1.4497079818299805) internal successors, (2234), 1547 states have internal predecessors, (2234), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 07:10:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2292 transitions. [2023-11-29 07:10:47,191 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2292 transitions. Word has length 207 [2023-11-29 07:10:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:47,192 INFO L495 AbstractCegarLoop]: Abstraction has 1574 states and 2292 transitions. [2023-11-29 07:10:47,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.166666666666664) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:47,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2292 transitions. [2023-11-29 07:10:47,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2023-11-29 07:10:47,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:47,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:47,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 07:10:47,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:47,403 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:47,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1048501474, now seen corresponding path program 2 times [2023-11-29 07:10:47,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:47,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331267502] [2023-11-29 07:10:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:47,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:47,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:47,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855912080] [2023-11-29 07:10:47,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:10:47,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:47,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:47,682 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:47,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 07:10:48,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 07:10:48,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:10:48,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 07:10:48,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2023-11-29 07:10:48,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:48,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:48,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331267502] [2023-11-29 07:10:48,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:48,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855912080] [2023-11-29 07:10:48,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855912080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:48,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:48,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 07:10:48,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718773368] [2023-11-29 07:10:48,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:48,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:10:48,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:10:48,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:10:48,716 INFO L87 Difference]: Start difference. First operand 1574 states and 2292 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:49,185 INFO L93 Difference]: Finished difference Result 1774 states and 2580 transitions. [2023-11-29 07:10:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:10:49,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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 645 [2023-11-29 07:10:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:49,196 INFO L225 Difference]: With dead ends: 1774 [2023-11-29 07:10:49,196 INFO L226 Difference]: Without dead ends: 1614 [2023-11-29 07:10:49,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:10:49,198 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 12 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:49,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3192 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:10:49,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2023-11-29 07:10:49,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1611. [2023-11-29 07:10:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1611 states, 1578 states have (on average 1.443599493029151) internal successors, (2278), 1584 states have internal predecessors, (2278), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-29 07:10:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2336 transitions. [2023-11-29 07:10:49,246 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2336 transitions. Word has length 645 [2023-11-29 07:10:49,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:49,247 INFO L495 AbstractCegarLoop]: Abstraction has 1611 states and 2336 transitions. [2023-11-29 07:10:49,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2336 transitions. [2023-11-29 07:10:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2023-11-29 07:10:49,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:49,290 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:49,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 07:10:49,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 07:10:49,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:49,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash 612829185, now seen corresponding path program 1 times [2023-11-29 07:10:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736383421] [2023-11-29 07:10:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:49,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:49,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:49,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530457541] [2023-11-29 07:10:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:49,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:49,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:49,811 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:49,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 07:10:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:10:51,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:10:51,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:51,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:10:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:10:52,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:52,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736383421] [2023-11-29 07:10:52,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:52,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530457541] [2023-11-29 07:10:52,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530457541] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:10:52,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 07:10:52,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 07:10:52,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469948695] [2023-11-29 07:10:52,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 07:10:52,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 07:10:52,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:52,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 07:10:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:10:52,734 INFO L87 Difference]: Start difference. First operand 1611 states and 2336 transitions. Second operand has 12 states, 12 states have (on average 102.66666666666667) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:53,309 INFO L93 Difference]: Finished difference Result 4876 states and 7076 transitions. [2023-11-29 07:10:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 07:10:53,310 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 102.66666666666667) internal successors, (1232), 11 states have internal predecessors, (1232), 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 646 [2023-11-29 07:10:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:53,341 INFO L225 Difference]: With dead ends: 4876 [2023-11-29 07:10:53,341 INFO L226 Difference]: Without dead ends: 4678 [2023-11-29 07:10:53,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1290 GetRequests, 1280 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:10:53,343 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 11271 mSDsluCounter, 5973 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11361 SdHoareTripleChecker+Valid, 6850 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:53,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11361 Valid, 6850 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:10:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2023-11-29 07:10:53,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 3723. [2023-11-29 07:10:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3723 states, 3654 states have (on average 1.4444444444444444) internal successors, (5278), 3660 states have internal predecessors, (5278), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 61 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-29 07:10:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3723 states to 3723 states and 5408 transitions. [2023-11-29 07:10:53,447 INFO L78 Accepts]: Start accepts. Automaton has 3723 states and 5408 transitions. Word has length 646 [2023-11-29 07:10:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:53,448 INFO L495 AbstractCegarLoop]: Abstraction has 3723 states and 5408 transitions. [2023-11-29 07:10:53,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 102.66666666666667) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3723 states and 5408 transitions. [2023-11-29 07:10:53,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1523 [2023-11-29 07:10:53,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:53,470 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:53,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 07:10:53,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 07:10:53,672 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:53,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:53,673 INFO L85 PathProgramCache]: Analyzing trace with hash -39683793, now seen corresponding path program 2 times [2023-11-29 07:10:53,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:53,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394090283] [2023-11-29 07:10:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:53,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:54,357 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:54,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963925027] [2023-11-29 07:10:54,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:10:54,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:54,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:54,363 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:54,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 07:10:55,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 07:10:55,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:10:55,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 07:10:55,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:10:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6580 trivial. 0 not checked. [2023-11-29 07:10:56,088 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:10:56,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:10:56,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394090283] [2023-11-29 07:10:56,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:10:56,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963925027] [2023-11-29 07:10:56,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963925027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:10:56,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:10:56,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:10:56,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203705097] [2023-11-29 07:10:56,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:10:56,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:10:56,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:10:56,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:10:56,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:10:56,093 INFO L87 Difference]: Start difference. First operand 3723 states and 5408 transitions. Second operand has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:10:56,710 INFO L93 Difference]: Finished difference Result 3931 states and 5707 transitions. [2023-11-29 07:10:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 07:10:56,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 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 1522 [2023-11-29 07:10:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:10:56,736 INFO L225 Difference]: With dead ends: 3931 [2023-11-29 07:10:56,736 INFO L226 Difference]: Without dead ends: 3734 [2023-11-29 07:10:56,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 1516 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:10:56,739 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 17 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:10:56,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3759 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 07:10:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2023-11-29 07:10:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3731. [2023-11-29 07:10:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 3662 states have (on average 1.4445658110322228) internal successors, (5290), 3668 states have internal predecessors, (5290), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 61 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-29 07:10:56,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5420 transitions. [2023-11-29 07:10:56,864 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5420 transitions. Word has length 1522 [2023-11-29 07:10:56,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:10:56,867 INFO L495 AbstractCegarLoop]: Abstraction has 3731 states and 5420 transitions. [2023-11-29 07:10:56,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.714285714285715) internal successors, (208), 7 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:10:56,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5420 transitions. [2023-11-29 07:10:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1524 [2023-11-29 07:10:56,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:10:56,900 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:10:56,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 07:10:57,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 07:10:57,101 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:10:57,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:10:57,102 INFO L85 PathProgramCache]: Analyzing trace with hash 754457787, now seen corresponding path program 1 times [2023-11-29 07:10:57,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:10:57,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061076377] [2023-11-29 07:10:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:57,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:10:57,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:10:57,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236598684] [2023-11-29 07:10:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:10:57,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:10:57,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:10:57,637 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:10:57,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 07:11:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:00,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 6959 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:11:00,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6580 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2023-11-29 07:11:00,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:11:00,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:00,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061076377] [2023-11-29 07:11:00,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:11:00,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236598684] [2023-11-29 07:11:00,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236598684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:00,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:00,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:11:00,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819484861] [2023-11-29 07:11:00,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:00,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:11:00,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:00,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:11:00,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:11:00,538 INFO L87 Difference]: Start difference. First operand 3731 states and 5420 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:11:00,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:00,653 INFO L93 Difference]: Finished difference Result 7332 states and 10648 transitions. [2023-11-29 07:11:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:11:00,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 2 states have internal predecessors, (264), 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 1523 [2023-11-29 07:11:00,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:00,676 INFO L225 Difference]: With dead ends: 7332 [2023-11-29 07:11:00,676 INFO L226 Difference]: Without dead ends: 3729 [2023-11-29 07:11:00,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 1521 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:11:00,684 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 123 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:00,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1452 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:11:00,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2023-11-29 07:11:00,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3729. [2023-11-29 07:11:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3729 states, 3660 states have (on average 1.444535519125683) internal successors, (5287), 3666 states have internal predecessors, (5287), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 61 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-29 07:11:00,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3729 states to 3729 states and 5417 transitions. [2023-11-29 07:11:00,839 INFO L78 Accepts]: Start accepts. Automaton has 3729 states and 5417 transitions. Word has length 1523 [2023-11-29 07:11:00,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:00,840 INFO L495 AbstractCegarLoop]: Abstraction has 3729 states and 5417 transitions. [2023-11-29 07:11:00,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:11:00,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3729 states and 5417 transitions. [2023-11-29 07:11:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1537 [2023-11-29 07:11:00,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:00,880 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:00,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 07:11:01,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 07:11:01,081 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:01,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1007156894, now seen corresponding path program 1 times [2023-11-29 07:11:01,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:01,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269770155] [2023-11-29 07:11:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:01,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:01,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:11:01,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095399548] [2023-11-29 07:11:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:01,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:01,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:01,673 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:01,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 07:11:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:04,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 7106 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:11:04,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6565 backedges. 1117 proven. 0 refuted. 0 times theorem prover too weak. 5448 trivial. 0 not checked. [2023-11-29 07:11:05,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:11:05,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:05,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269770155] [2023-11-29 07:11:05,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:11:05,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095399548] [2023-11-29 07:11:05,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095399548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:05,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:05,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:11:05,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269546929] [2023-11-29 07:11:05,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:05,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:11:05,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:05,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:11:05,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:11:05,184 INFO L87 Difference]: Start difference. First operand 3729 states and 5417 transitions. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:11:05,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:05,320 INFO L93 Difference]: Finished difference Result 7335 states and 10651 transitions. [2023-11-29 07:11:05,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:11:05,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 1536 [2023-11-29 07:11:05,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:05,340 INFO L225 Difference]: With dead ends: 7335 [2023-11-29 07:11:05,340 INFO L226 Difference]: Without dead ends: 3906 [2023-11-29 07:11:05,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1535 GetRequests, 1534 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:11:05,345 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 472 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1615 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 [2023-11-29 07:11:05,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 1615 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:11:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2023-11-29 07:11:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 3904. [2023-11-29 07:11:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3904 states, 3830 states have (on average 1.4443864229765013) internal successors, (5532), 3841 states have internal predecessors, (5532), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 62 states have call predecessors, (70), 70 states have call successors, (70) [2023-11-29 07:11:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 5672 transitions. [2023-11-29 07:11:05,433 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 5672 transitions. Word has length 1536 [2023-11-29 07:11:05,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:05,434 INFO L495 AbstractCegarLoop]: Abstraction has 3904 states and 5672 transitions. [2023-11-29 07:11:05,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 07:11:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 5672 transitions. [2023-11-29 07:11:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1550 [2023-11-29 07:11:05,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:05,525 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:05,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 07:11:05,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 07:11:05,726 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:05,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash -928071639, now seen corresponding path program 1 times [2023-11-29 07:11:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:05,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928915895] [2023-11-29 07:11:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:05,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:06,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:11:06,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971332213] [2023-11-29 07:11:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:06,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:06,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:06,252 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:06,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 07:11:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:09,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 7253 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:11:09,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 2164 proven. 0 refuted. 0 times theorem prover too weak. 4398 trivial. 0 not checked. [2023-11-29 07:11:13,736 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:11:13,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:13,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928915895] [2023-11-29 07:11:13,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:11:13,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971332213] [2023-11-29 07:11:13,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971332213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:13,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:13,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:11:13,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040790713] [2023-11-29 07:11:13,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:13,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:11:13,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:13,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:11:13,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:11:13,740 INFO L87 Difference]: Start difference. First operand 3904 states and 5672 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 07:11:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:13,926 INFO L93 Difference]: Finished difference Result 9755 states and 14186 transitions. [2023-11-29 07:11:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:11:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1549 [2023-11-29 07:11:13,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:13,984 INFO L225 Difference]: With dead ends: 9755 [2023-11-29 07:11:13,984 INFO L226 Difference]: Without dead ends: 6846 [2023-11-29 07:11:13,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 1547 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:11:13,990 INFO L413 NwaCegarLoop]: 1170 mSDtfsCounter, 495 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:13,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1870 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 07:11:13,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6846 states. [2023-11-29 07:11:14,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6846 to 6844. [2023-11-29 07:11:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6844 states, 6737 states have (on average 1.4473801395279797) internal successors, (9751), 6748 states have internal predecessors, (9751), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 95 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 07:11:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 9957 transitions. [2023-11-29 07:11:14,138 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 9957 transitions. Word has length 1549 [2023-11-29 07:11:14,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:14,143 INFO L495 AbstractCegarLoop]: Abstraction has 6844 states and 9957 transitions. [2023-11-29 07:11:14,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 07:11:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 9957 transitions. [2023-11-29 07:11:14,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1560 [2023-11-29 07:11:14,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:14,173 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:14,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 07:11:14,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 07:11:14,374 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:14,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:14,374 INFO L85 PathProgramCache]: Analyzing trace with hash -700566276, now seen corresponding path program 1 times [2023-11-29 07:11:14,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:14,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900873530] [2023-11-29 07:11:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:14,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:14,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:11:14,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595550402] [2023-11-29 07:11:14,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:14,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:14,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:14,967 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:14,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 07:11:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:18,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 7289 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 07:11:18,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 1519 proven. 0 refuted. 0 times theorem prover too weak. 5043 trivial. 0 not checked. [2023-11-29 07:11:18,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:11:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:18,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900873530] [2023-11-29 07:11:18,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:11:18,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595550402] [2023-11-29 07:11:18,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595550402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:18,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:18,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 07:11:18,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024934800] [2023-11-29 07:11:18,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:18,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 07:11:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 07:11:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:11:18,443 INFO L87 Difference]: Start difference. First operand 6844 states and 9957 transitions. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 07:11:19,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:19,053 INFO L93 Difference]: Finished difference Result 14328 states and 20717 transitions. [2023-11-29 07:11:19,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:11:19,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1559 [2023-11-29 07:11:19,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:19,070 INFO L225 Difference]: With dead ends: 14328 [2023-11-29 07:11:19,071 INFO L226 Difference]: Without dead ends: 7564 [2023-11-29 07:11:19,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1558 GetRequests, 1554 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 07:11:19,081 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 12 mSDsluCounter, 2469 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:19,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3192 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 07:11:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7564 states. [2023-11-29 07:11:19,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7564 to 7510. [2023-11-29 07:11:19,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7510 states, 7403 states have (on average 1.424152370660543) internal successors, (10543), 7414 states have internal predecessors, (10543), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 95 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 07:11:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7510 states to 7510 states and 10749 transitions. [2023-11-29 07:11:19,289 INFO L78 Accepts]: Start accepts. Automaton has 7510 states and 10749 transitions. Word has length 1559 [2023-11-29 07:11:19,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:19,290 INFO L495 AbstractCegarLoop]: Abstraction has 7510 states and 10749 transitions. [2023-11-29 07:11:19,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 07:11:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7510 states and 10749 transitions. [2023-11-29 07:11:19,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1570 [2023-11-29 07:11:19,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:19,328 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:19,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 07:11:19,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 07:11:19,529 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:19,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:19,530 INFO L85 PathProgramCache]: Analyzing trace with hash -137216638, now seen corresponding path program 1 times [2023-11-29 07:11:19,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:19,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517921825] [2023-11-29 07:11:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:19,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:20,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:11:20,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012069992] [2023-11-29 07:11:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:20,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:20,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:20,067 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:20,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 07:11:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:23,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 7299 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 07:11:23,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6607 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 6273 trivial. 0 not checked. [2023-11-29 07:11:23,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:11:23,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517921825] [2023-11-29 07:11:23,624 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:11:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012069992] [2023-11-29 07:11:23,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012069992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:23,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:23,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 07:11:23,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619846987] [2023-11-29 07:11:23,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:23,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 07:11:23,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:11:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:11:23,627 INFO L87 Difference]: Start difference. First operand 7510 states and 10749 transitions. Second operand has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 7 states have internal predecessors, (275), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 07:11:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:24,232 INFO L93 Difference]: Finished difference Result 15093 states and 21649 transitions. [2023-11-29 07:11:24,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 07:11:24,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 7 states have internal predecessors, (275), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1569 [2023-11-29 07:11:24,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:24,252 INFO L225 Difference]: With dead ends: 15093 [2023-11-29 07:11:24,252 INFO L226 Difference]: Without dead ends: 7708 [2023-11-29 07:11:24,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1569 GetRequests, 1563 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 07:11:24,264 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 17 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:24,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3759 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 07:11:24,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7708 states. [2023-11-29 07:11:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7708 to 7654. [2023-11-29 07:11:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7654 states, 7547 states have (on average 1.4255995759904598) internal successors, (10759), 7558 states have internal predecessors, (10759), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 95 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 07:11:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7654 states to 7654 states and 10965 transitions. [2023-11-29 07:11:24,547 INFO L78 Accepts]: Start accepts. Automaton has 7654 states and 10965 transitions. Word has length 1569 [2023-11-29 07:11:24,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:24,548 INFO L495 AbstractCegarLoop]: Abstraction has 7654 states and 10965 transitions. [2023-11-29 07:11:24,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.285714285714285) internal successors, (275), 7 states have internal predecessors, (275), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 07:11:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7654 states and 10965 transitions. [2023-11-29 07:11:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1580 [2023-11-29 07:11:24,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:24,581 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:24,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 07:11:24,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 07:11:24,782 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:24,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash -283579414, now seen corresponding path program 1 times [2023-11-29 07:11:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:24,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622299479] [2023-11-29 07:11:24,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:25,335 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:11:25,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719883646] [2023-11-29 07:11:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:25,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:25,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:25,337 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:25,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 07:11:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:28,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 7309 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 07:11:28,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6652 backedges. 958 proven. 0 refuted. 0 times theorem prover too weak. 5694 trivial. 0 not checked. [2023-11-29 07:11:29,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:11:29,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:29,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622299479] [2023-11-29 07:11:29,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:11:29,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719883646] [2023-11-29 07:11:29,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719883646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:29,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:29,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 07:11:29,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196787467] [2023-11-29 07:11:29,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:29,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 07:11:29,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:29,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 07:11:29,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:11:29,204 INFO L87 Difference]: Start difference. First operand 7654 states and 10965 transitions. Second operand has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 07:11:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:30,133 INFO L93 Difference]: Finished difference Result 15767 states and 22462 transitions. [2023-11-29 07:11:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 07:11:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1579 [2023-11-29 07:11:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:30,151 INFO L225 Difference]: With dead ends: 15767 [2023-11-29 07:11:30,151 INFO L226 Difference]: Without dead ends: 8410 [2023-11-29 07:11:30,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1578 GetRequests, 1570 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 07:11:30,164 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 24 mSDsluCounter, 4850 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5562 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:30,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5562 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 07:11:30,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8410 states. [2023-11-29 07:11:30,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8410 to 8320. [2023-11-29 07:11:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8320 states, 8213 states have (on average 1.4064288323389749) internal successors, (11551), 8224 states have internal predecessors, (11551), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 95 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 07:11:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8320 states to 8320 states and 11757 transitions. [2023-11-29 07:11:30,383 INFO L78 Accepts]: Start accepts. Automaton has 8320 states and 11757 transitions. Word has length 1579 [2023-11-29 07:11:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:30,385 INFO L495 AbstractCegarLoop]: Abstraction has 8320 states and 11757 transitions. [2023-11-29 07:11:30,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.5) internal successors, (345), 10 states have internal predecessors, (345), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 07:11:30,386 INFO L276 IsEmpty]: Start isEmpty. Operand 8320 states and 11757 transitions. [2023-11-29 07:11:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1590 [2023-11-29 07:11:30,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:30,518 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:30,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 07:11:30,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 07:11:30,719 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:30,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:30,723 INFO L85 PathProgramCache]: Analyzing trace with hash -255548782, now seen corresponding path program 1 times [2023-11-29 07:11:30,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:30,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310518851] [2023-11-29 07:11:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:31,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:11:31,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209854911] [2023-11-29 07:11:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:31,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:31,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:31,396 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:31,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 07:11:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:11:35,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 7319 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 07:11:35,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:11:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6697 backedges. 985 proven. 0 refuted. 0 times theorem prover too weak. 5712 trivial. 0 not checked. [2023-11-29 07:11:35,454 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:11:35,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:11:35,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310518851] [2023-11-29 07:11:35,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 07:11:35,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209854911] [2023-11-29 07:11:35,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209854911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:11:35,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:11:35,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 07:11:35,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928795380] [2023-11-29 07:11:35,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:11:35,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 07:11:35,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:11:35,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 07:11:35,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:11:35,459 INFO L87 Difference]: Start difference. First operand 8320 states and 11757 transitions. Second operand has 12 states, 12 states have (on average 29.083333333333332) internal successors, (349), 12 states have internal predecessors, (349), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 07:11:36,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:11:36,651 INFO L93 Difference]: Finished difference Result 16550 states and 23430 transitions. [2023-11-29 07:11:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 07:11:36,652 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 29.083333333333332) internal successors, (349), 12 states have internal predecessors, (349), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1589 [2023-11-29 07:11:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:11:36,668 INFO L225 Difference]: With dead ends: 16550 [2023-11-29 07:11:36,668 INFO L226 Difference]: Without dead ends: 8572 [2023-11-29 07:11:36,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1590 GetRequests, 1578 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:11:36,680 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 34 mSDsluCounter, 5906 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 6604 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 07:11:36,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 6604 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 07:11:36,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8572 states. [2023-11-29 07:11:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8572 to 8464. [2023-11-29 07:11:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 8357 states have (on average 1.408041163096805) internal successors, (11767), 8368 states have internal predecessors, (11767), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 95 states have call predecessors, (103), 103 states have call successors, (103) [2023-11-29 07:11:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 11973 transitions. [2023-11-29 07:11:36,896 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 11973 transitions. Word has length 1589 [2023-11-29 07:11:36,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:11:36,897 INFO L495 AbstractCegarLoop]: Abstraction has 8464 states and 11973 transitions. [2023-11-29 07:11:36,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 29.083333333333332) internal successors, (349), 12 states have internal predecessors, (349), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 07:11:36,898 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 11973 transitions. [2023-11-29 07:11:36,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1600 [2023-11-29 07:11:36,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:11:36,939 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:11:36,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 07:11:37,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:37,140 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:11:37,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:11:37,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2016675406, now seen corresponding path program 1 times [2023-11-29 07:11:37,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:11:37,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723331529] [2023-11-29 07:11:37,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:37,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:11:37,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 07:11:37,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881276490] [2023-11-29 07:11:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:11:37,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:11:37,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:11:37,683 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:11:37,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30468f6-1b6f-40ce-9e55-a75e873ca15c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process