./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:29:07,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:29:07,890 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:29:07,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:29:07,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:29:07,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:29:07,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:29:07,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:29:07,935 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:29:07,938 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:29:07,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:29:07,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:29:07,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:29:07,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:29:07,940 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:29:07,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:29:07,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:29:07,942 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:29:07,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:29:07,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:29:07,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:29:07,944 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:29:07,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:29:07,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:29:07,945 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:29:07,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:29:07,946 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:29:07,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:29:07,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:29:07,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:29:07,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:29:07,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:29:07,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:29:07,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:29:07,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:29:07,950 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:29:07,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:29:07,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:29:07,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:29:07,951 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:29:07,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:29:07,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:29:07,952 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_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 [2023-11-23 22:29:08,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:29:08,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:29:08,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:29:08,278 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:29:08,278 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:29:08,280 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2023-11-23 22:29:11,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:29:11,898 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:29:11,898 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2023-11-23 22:29:11,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/data/69be5b7a5/abefa814c8b14df99272d15ee17a9fac/FLAGa7474b574 [2023-11-23 22:29:11,934 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/data/69be5b7a5/abefa814c8b14df99272d15ee17a9fac [2023-11-23 22:29:11,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:29:11,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:29:11,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:29:11,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:29:11,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:29:11,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:29:11" (1/1) ... [2023-11-23 22:29:11,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e509813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:11, skipping insertion in model container [2023-11-23 22:29:11,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:29:11" (1/1) ... [2023-11-23 22:29:12,040 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:29:12,499 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_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2023-11-23 22:29:12,690 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_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2023-11-23 22:29:12,691 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_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2023-11-23 22:29:12,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:29:12,764 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:29:12,813 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_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2023-11-23 22:29:12,877 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_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2023-11-23 22:29:12,878 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_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2023-11-23 22:29:12,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:29:12,919 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:29:12,928 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:29:12,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12 WrapperNode [2023-11-23 22:29:12,929 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:29:12,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:29:12,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:29:12,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:29:12,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:12,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,101 INFO L138 Inliner]: procedures = 176, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1329 [2023-11-23 22:29:13,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:29:13,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:29:13,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:29:13,103 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:29:13,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,128 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,269 INFO L189 HeapSplitter]: Split 258 memory accesses to 5 slices as follows [2, 34, 0, 217, 5] [2023-11-23 22:29:13,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,424 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:29:13,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:29:13,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:29:13,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:29:13,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (1/1) ... [2023-11-23 22:29:13,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:29:13,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:13,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:29:13,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:29:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:29:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:29:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:29:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:29:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:29:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:29:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:29:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:29:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:29:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:29:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-23 22:29:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-23 22:29:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-23 22:29:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-23 22:29:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-23 22:29:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-23 22:29:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-23 22:29:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-23 22:29:13,519 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-23 22:29:13,519 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-23 22:29:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:29:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:29:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 22:29:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 22:29:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 22:29:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 22:29:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 22:29:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:29:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 22:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 22:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 22:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 22:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 22:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 22:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:29:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:29:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:29:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:29:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:29:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:29:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:29:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:29:13,782 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:29:13,785 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:29:15,598 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:29:15,672 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:29:15,673 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-23 22:29:15,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:29:15 BoogieIcfgContainer [2023-11-23 22:29:15,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:29:15,677 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:29:15,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:29:15,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:29:15,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:29:11" (1/3) ... [2023-11-23 22:29:15,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c25669f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:29:15, skipping insertion in model container [2023-11-23 22:29:15,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:29:12" (2/3) ... [2023-11-23 22:29:15,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c25669f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:29:15, skipping insertion in model container [2023-11-23 22:29:15,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:29:15" (3/3) ... [2023-11-23 22:29:15,688 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-1.i [2023-11-23 22:29:15,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:29:15,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 22:29:15,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:29:15,810 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;@51f45990, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:29:15,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 22:29:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 349 states, 342 states have (on average 1.7105263157894737) internal successors, (585), 344 states have internal predecessors, (585), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:29:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 22:29:15,835 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:15,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:15,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:15,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1359808950, now seen corresponding path program 1 times [2023-11-23 22:29:15,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:15,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718160984] [2023-11-23 22:29:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:29:16,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:16,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718160984] [2023-11-23 22:29:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718160984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:16,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:16,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:29:16,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572061273] [2023-11-23 22:29:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:16,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:29:16,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:29:16,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:29:16,138 INFO L87 Difference]: Start difference. First operand has 349 states, 342 states have (on average 1.7105263157894737) internal successors, (585), 344 states have internal predecessors, (585), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:16,218 INFO L93 Difference]: Finished difference Result 697 states and 1181 transitions. [2023-11-23 22:29:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:29:16,221 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 [2023-11-23 22:29:16,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:16,234 INFO L225 Difference]: With dead ends: 697 [2023-11-23 22:29:16,234 INFO L226 Difference]: Without dead ends: 347 [2023-11-23 22:29:16,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:29:16,243 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:16,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:29:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-23 22:29:16,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-11-23 22:29:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 341 states have (on average 1.5073313782991202) internal successors, (514), 342 states have internal predecessors, (514), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:29:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 520 transitions. [2023-11-23 22:29:16,314 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 520 transitions. Word has length 7 [2023-11-23 22:29:16,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:16,315 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 520 transitions. [2023-11-23 22:29:16,315 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) [2023-11-23 22:29:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 520 transitions. [2023-11-23 22:29:16,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 22:29:16,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:16,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:16,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:29:16,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:16,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1914079696, now seen corresponding path program 1 times [2023-11-23 22:29:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:16,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525227157] [2023-11-23 22:29:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:16,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:29:16,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:16,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525227157] [2023-11-23 22:29:16,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525227157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:16,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:16,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:29:16,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317468478] [2023-11-23 22:29:16,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:16,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:16,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:16,536 INFO L87 Difference]: Start difference. First operand 347 states and 520 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:16,779 INFO L93 Difference]: Finished difference Result 859 states and 1290 transitions. [2023-11-23 22:29:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:16,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-23 22:29:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:16,786 INFO L225 Difference]: With dead ends: 859 [2023-11-23 22:29:16,787 INFO L226 Difference]: Without dead ends: 689 [2023-11-23 22:29:16,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:29:16,790 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 506 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:16,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1493 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:29:16,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-11-23 22:29:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 349. [2023-11-23 22:29:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 343 states have (on average 1.5043731778425655) internal successors, (516), 344 states have internal predecessors, (516), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:29:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 522 transitions. [2023-11-23 22:29:16,877 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 522 transitions. Word has length 9 [2023-11-23 22:29:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:16,877 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 522 transitions. [2023-11-23 22:29:16,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:16,879 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 522 transitions. [2023-11-23 22:29:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 22:29:16,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:16,886 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:16,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:29:16,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:16,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash -93553660, now seen corresponding path program 1 times [2023-11-23 22:29:16,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:16,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097758355] [2023-11-23 22:29:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:16,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:16,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:16,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758475820] [2023-11-23 22:29:16,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:16,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:16,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:17,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:29:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:17,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:29:17,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:29:17,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:17,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:17,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097758355] [2023-11-23 22:29:17,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:17,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758475820] [2023-11-23 22:29:17,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758475820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:17,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:17,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:29:17,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495013304] [2023-11-23 22:29:17,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:17,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:29:17,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:17,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:29:17,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:29:17,404 INFO L87 Difference]: Start difference. First operand 349 states and 522 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:17,503 INFO L93 Difference]: Finished difference Result 716 states and 1072 transitions. [2023-11-23 22:29:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:29:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-23 22:29:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:17,506 INFO L225 Difference]: With dead ends: 716 [2023-11-23 22:29:17,507 INFO L226 Difference]: Without dead ends: 370 [2023-11-23 22:29:17,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:29:17,509 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 9 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:17,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 982 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:29:17,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-23 22:29:17,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2023-11-23 22:29:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 363 states have (on average 1.4765840220385675) internal successors, (536), 364 states have internal predecessors, (536), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:29:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 542 transitions. [2023-11-23 22:29:17,530 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 542 transitions. Word has length 85 [2023-11-23 22:29:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:17,530 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 542 transitions. [2023-11-23 22:29:17,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 542 transitions. [2023-11-23 22:29:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 22:29:17,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:17,535 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:17,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:17,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:17,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:17,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1592626178, now seen corresponding path program 1 times [2023-11-23 22:29:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:17,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686555446] [2023-11-23 22:29:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:17,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:17,866 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:17,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470384221] [2023-11-23 22:29:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:17,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:17,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:17,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:17,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:29:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:18,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:29:18,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:29:18,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:18,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:18,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686555446] [2023-11-23 22:29:18,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470384221] [2023-11-23 22:29:18,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470384221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:18,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:18,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:29:18,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328772835] [2023-11-23 22:29:18,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:18,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:18,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:18,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:18,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:18,303 INFO L87 Difference]: Start difference. First operand 369 states and 542 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:18,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:18,404 INFO L93 Difference]: Finished difference Result 722 states and 1068 transitions. [2023-11-23 22:29:18,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:18,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-23 22:29:18,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:18,407 INFO L225 Difference]: With dead ends: 722 [2023-11-23 22:29:18,408 INFO L226 Difference]: Without dead ends: 356 [2023-11-23 22:29:18,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:29:18,410 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 165 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:18,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1321 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:29:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-11-23 22:29:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 355. [2023-11-23 22:29:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 349 states have (on average 1.475644699140401) internal successors, (515), 350 states have internal predecessors, (515), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:29:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 521 transitions. [2023-11-23 22:29:18,427 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 521 transitions. Word has length 85 [2023-11-23 22:29:18,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:18,428 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 521 transitions. [2023-11-23 22:29:18,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:18,428 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 521 transitions. [2023-11-23 22:29:18,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 22:29:18,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:18,433 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:18,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:18,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:18,655 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:18,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash 930948368, now seen corresponding path program 1 times [2023-11-23 22:29:18,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:18,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527210937] [2023-11-23 22:29:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:18,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:18,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:18,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50306091] [2023-11-23 22:29:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:18,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:18,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:18,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:18,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:29:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:19,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:29:19,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:29:19,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:19,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:19,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527210937] [2023-11-23 22:29:19,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:19,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50306091] [2023-11-23 22:29:19,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50306091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:19,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:19,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:29:19,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787864355] [2023-11-23 22:29:19,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:19,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:29:19,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:19,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:29:19,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:29:19,346 INFO L87 Difference]: Start difference. First operand 355 states and 521 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:19,467 INFO L93 Difference]: Finished difference Result 972 states and 1441 transitions. [2023-11-23 22:29:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:29:19,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-23 22:29:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:19,472 INFO L225 Difference]: With dead ends: 972 [2023-11-23 22:29:19,472 INFO L226 Difference]: Without dead ends: 620 [2023-11-23 22:29:19,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:29:19,474 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 344 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:19,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1161 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:29:19,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2023-11-23 22:29:19,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 613. [2023-11-23 22:29:19,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 607 states have (on average 1.4991762767710048) internal successors, (910), 608 states have internal predecessors, (910), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 22:29:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 916 transitions. [2023-11-23 22:29:19,502 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 916 transitions. Word has length 85 [2023-11-23 22:29:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:19,503 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 916 transitions. [2023-11-23 22:29:19,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:29:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 916 transitions. [2023-11-23 22:29:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 22:29:19,505 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:19,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:19,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:19,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:19,728 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:19,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:19,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2079688962, now seen corresponding path program 1 times [2023-11-23 22:29:19,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:19,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616509246] [2023-11-23 22:29:19,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:19,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:19,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058795937] [2023-11-23 22:29:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:19,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:19,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:19,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:19,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:29:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:20,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:29:20,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:20,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 22:29:20,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:29:20,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:29:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:29:20,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616509246] [2023-11-23 22:29:20,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058795937] [2023-11-23 22:29:20,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058795937] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:29:20,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:29:20,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-23 22:29:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354625637] [2023-11-23 22:29:20,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:29:20,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 22:29:20,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 22:29:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:29:20,624 INFO L87 Difference]: Start difference. First operand 613 states and 916 transitions. Second operand has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 22:29:21,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:21,085 INFO L93 Difference]: Finished difference Result 2651 states and 3965 transitions. [2023-11-23 22:29:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 22:29:21,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 98 [2023-11-23 22:29:21,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:21,101 INFO L225 Difference]: With dead ends: 2651 [2023-11-23 22:29:21,101 INFO L226 Difference]: Without dead ends: 2340 [2023-11-23 22:29:21,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 184 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-23 22:29:21,104 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 3086 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3094 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:21,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3094 Valid, 3935 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:29:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2023-11-23 22:29:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1034. [2023-11-23 22:29:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1018 states have (on average 1.4666011787819253) internal successors, (1493), 1019 states have internal predecessors, (1493), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 22:29:21,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1517 transitions. [2023-11-23 22:29:21,164 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1517 transitions. Word has length 98 [2023-11-23 22:29:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:21,164 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1517 transitions. [2023-11-23 22:29:21,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 22:29:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1517 transitions. [2023-11-23 22:29:21,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-11-23 22:29:21,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:21,171 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:21,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:21,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:21,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:21,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:21,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1254716578, now seen corresponding path program 1 times [2023-11-23 22:29:21,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:21,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041080030] [2023-11-23 22:29:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:21,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:21,586 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599737934] [2023-11-23 22:29:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:21,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:21,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:21,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:21,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:29:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:22,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 22:29:22,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:22,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 22:29:22,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:22,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:22,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:23,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:23,183 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:29:23,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:29:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:29:23,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:23,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041080030] [2023-11-23 22:29:23,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:23,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599737934] [2023-11-23 22:29:23,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599737934] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:29:23,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:29:23,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-23 22:29:23,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316647440] [2023-11-23 22:29:23,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:29:23,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 22:29:23,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:23,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 22:29:23,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-23 22:29:23,969 INFO L87 Difference]: Start difference. First operand 1034 states and 1517 transitions. Second operand has 15 states, 15 states have (on average 42.266666666666666) internal successors, (634), 15 states have internal predecessors, (634), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 22:29:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:25,514 INFO L93 Difference]: Finished difference Result 5585 states and 8360 transitions. [2023-11-23 22:29:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 22:29:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 42.266666666666666) internal successors, (634), 15 states have internal predecessors, (634), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 326 [2023-11-23 22:29:25,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:25,547 INFO L225 Difference]: With dead ends: 5585 [2023-11-23 22:29:25,547 INFO L226 Difference]: Without dead ends: 5274 [2023-11-23 22:29:25,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 634 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-11-23 22:29:25,550 INFO L413 NwaCegarLoop]: 2438 mSDtfsCounter, 6776 mSDsluCounter, 16589 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6802 SdHoareTripleChecker+Valid, 19027 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:25,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6802 Valid, 19027 Invalid, 957 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 22:29:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2023-11-23 22:29:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 2108. [2023-11-23 22:29:25,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2074 states have (on average 1.4517839922854388) internal successors, (3011), 2075 states have internal predecessors, (3011), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 22:29:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3071 transitions. [2023-11-23 22:29:25,673 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3071 transitions. Word has length 326 [2023-11-23 22:29:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:25,676 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 3071 transitions. [2023-11-23 22:29:25,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 42.266666666666666) internal successors, (634), 15 states have internal predecessors, (634), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 22:29:25,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3071 transitions. [2023-11-23 22:29:25,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2023-11-23 22:29:25,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:25,702 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:25,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:25,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:25,915 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:25,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:25,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1264868322, now seen corresponding path program 2 times [2023-11-23 22:29:25,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:25,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467104072] [2023-11-23 22:29:25,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:25,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:26,288 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:26,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783036991] [2023-11-23 22:29:26,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:29:26,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:26,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:26,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:26,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:29:27,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 22:29:27,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:29:27,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:29:27,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:27,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 22:29:27,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 22:29:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2023-11-23 22:29:27,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:27,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:27,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467104072] [2023-11-23 22:29:27,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:27,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783036991] [2023-11-23 22:29:27,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783036991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:27,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:27,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:29:27,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469108311] [2023-11-23 22:29:27,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:27,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:27,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:27,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:27,320 INFO L87 Difference]: Start difference. First operand 2108 states and 3071 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:29:27,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:27,472 INFO L93 Difference]: Finished difference Result 2307 states and 3366 transitions. [2023-11-23 22:29:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:27,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 782 [2023-11-23 22:29:27,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:27,488 INFO L225 Difference]: With dead ends: 2307 [2023-11-23 22:29:27,488 INFO L226 Difference]: Without dead ends: 2303 [2023-11-23 22:29:27,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:29:27,491 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 492 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:27,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1472 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:29:27,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2023-11-23 22:29:27,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2110. [2023-11-23 22:29:27,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2076 states have (on average 1.451348747591522) internal successors, (3013), 2077 states have internal predecessors, (3013), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 22:29:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3073 transitions. [2023-11-23 22:29:27,577 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3073 transitions. Word has length 782 [2023-11-23 22:29:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:27,579 INFO L495 AbstractCegarLoop]: Abstraction has 2110 states and 3073 transitions. [2023-11-23 22:29:27,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:29:27,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3073 transitions. [2023-11-23 22:29:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2023-11-23 22:29:27,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:27,613 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:27,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:27,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:27,835 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:27,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -431521874, now seen corresponding path program 1 times [2023-11-23 22:29:27,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:27,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91817365] [2023-11-23 22:29:27,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:27,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:28,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:28,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898268434] [2023-11-23 22:29:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:28,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:28,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:28,221 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:28,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:29:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:29,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 4052 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:29:30,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2023-11-23 22:29:30,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:30,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:30,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91817365] [2023-11-23 22:29:30,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:30,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898268434] [2023-11-23 22:29:30,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898268434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:30,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:30,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:29:30,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839805799] [2023-11-23 22:29:30,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:30,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:29:30,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:30,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:29:30,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:29:30,114 INFO L87 Difference]: Start difference. First operand 2110 states and 3073 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:29:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:30,236 INFO L93 Difference]: Finished difference Result 2462 states and 3608 transitions. [2023-11-23 22:29:30,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:29:30,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 836 [2023-11-23 22:29:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:30,251 INFO L225 Difference]: With dead ends: 2462 [2023-11-23 22:29:30,251 INFO L226 Difference]: Without dead ends: 2152 [2023-11-23 22:29:30,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:29:30,253 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 9 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:30,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 968 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:29:30,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2023-11-23 22:29:30,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 2150. [2023-11-23 22:29:30,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2116 states have (on average 1.4428166351606806) internal successors, (3053), 2117 states have internal predecessors, (3053), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 22:29:30,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3113 transitions. [2023-11-23 22:29:30,333 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3113 transitions. Word has length 836 [2023-11-23 22:29:30,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:30,335 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3113 transitions. [2023-11-23 22:29:30,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:29:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3113 transitions. [2023-11-23 22:29:30,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2023-11-23 22:29:30,347 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:30,347 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:30,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:30,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:30,568 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:30,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:30,568 INFO L85 PathProgramCache]: Analyzing trace with hash -37155088, now seen corresponding path program 1 times [2023-11-23 22:29:30,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:30,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357917425] [2023-11-23 22:29:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:30,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:30,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:30,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022539228] [2023-11-23 22:29:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:30,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:30,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:30,942 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:30,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 22:29:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:32,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 4054 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:29:32,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2023-11-23 22:29:32,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:32,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:32,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357917425] [2023-11-23 22:29:32,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:32,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022539228] [2023-11-23 22:29:32,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022539228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:32,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:32,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:29:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317636162] [2023-11-23 22:29:32,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:32,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:29:32,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:32,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:29:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:29:32,831 INFO L87 Difference]: Start difference. First operand 2150 states and 3113 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:29:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:32,951 INFO L93 Difference]: Finished difference Result 2474 states and 3600 transitions. [2023-11-23 22:29:32,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:29:32,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 836 [2023-11-23 22:29:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:32,966 INFO L225 Difference]: With dead ends: 2474 [2023-11-23 22:29:32,966 INFO L226 Difference]: Without dead ends: 2124 [2023-11-23 22:29:32,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 833 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:29:32,968 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 165 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:32,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1300 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:29:32,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2023-11-23 22:29:33,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2122. [2023-11-23 22:29:33,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2088 states have (on average 1.4420498084291187) internal successors, (3011), 2089 states have internal predecessors, (3011), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-23 22:29:33,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3071 transitions. [2023-11-23 22:29:33,063 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3071 transitions. Word has length 836 [2023-11-23 22:29:33,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:33,065 INFO L495 AbstractCegarLoop]: Abstraction has 2122 states and 3071 transitions. [2023-11-23 22:29:33,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:29:33,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3071 transitions. [2023-11-23 22:29:33,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2023-11-23 22:29:33,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:33,077 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:33,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:33,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:33,291 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:33,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:33,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1714490786, now seen corresponding path program 1 times [2023-11-23 22:29:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126722280] [2023-11-23 22:29:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:33,628 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:33,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45279628] [2023-11-23 22:29:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:33,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:33,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:33,647 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:33,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 22:29:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:35,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 4040 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:29:35,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 1062 proven. 0 refuted. 0 times theorem prover too weak. 2363 trivial. 0 not checked. [2023-11-23 22:29:38,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:38,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:38,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126722280] [2023-11-23 22:29:38,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:38,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45279628] [2023-11-23 22:29:38,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45279628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:38,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:38,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:29:38,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249009482] [2023-11-23 22:29:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:38,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:29:38,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:29:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:29:38,523 INFO L87 Difference]: Start difference. First operand 2122 states and 3071 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:29:38,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:38,781 INFO L93 Difference]: Finished difference Result 5305 states and 7692 transitions. [2023-11-23 22:29:38,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:29:38,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 836 [2023-11-23 22:29:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:38,807 INFO L225 Difference]: With dead ends: 5305 [2023-11-23 22:29:38,808 INFO L226 Difference]: Without dead ends: 3664 [2023-11-23 22:29:38,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 835 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:29:38,812 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 353 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:38,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1189 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:29:38,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2023-11-23 22:29:38,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3657. [2023-11-23 22:29:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3657 states, 3614 states have (on average 1.4468732706142777) internal successors, (5229), 3615 states have internal predecessors, (5229), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-23 22:29:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3657 states to 3657 states and 5307 transitions. [2023-11-23 22:29:38,972 INFO L78 Accepts]: Start accepts. Automaton has 3657 states and 5307 transitions. Word has length 836 [2023-11-23 22:29:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:38,974 INFO L495 AbstractCegarLoop]: Abstraction has 3657 states and 5307 transitions. [2023-11-23 22:29:38,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:29:38,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3657 states and 5307 transitions. [2023-11-23 22:29:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2023-11-23 22:29:38,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:38,997 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:39,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:39,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:39,220 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:39,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:39,221 INFO L85 PathProgramCache]: Analyzing trace with hash 929432309, now seen corresponding path program 1 times [2023-11-23 22:29:39,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:39,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862638236] [2023-11-23 22:29:39,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:39,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:39,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601844962] [2023-11-23 22:29:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:39,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:39,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:39,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:39,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 22:29:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:29:41,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 4076 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 22:29:41,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:41,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 22:29:42,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:42,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:42,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:42,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:42,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:42,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:42,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:42,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:43,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:43,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-23 22:29:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:29:43,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:29:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:29:44,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:44,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862638236] [2023-11-23 22:29:44,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:44,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601844962] [2023-11-23 22:29:44,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601844962] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:29:44,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 22:29:44,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-23 22:29:44,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679909270] [2023-11-23 22:29:44,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 22:29:44,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 22:29:44,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 22:29:44,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2023-11-23 22:29:44,790 INFO L87 Difference]: Start difference. First operand 3657 states and 5307 transitions. Second operand has 27 states, 27 states have (on average 59.629629629629626) internal successors, (1610), 27 states have internal predecessors, (1610), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 22:29:48,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:48,753 INFO L93 Difference]: Finished difference Result 18602 states and 27201 transitions. [2023-11-23 22:29:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-23 22:29:48,755 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 59.629629629629626) internal successors, (1610), 27 states have internal predecessors, (1610), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 846 [2023-11-23 22:29:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:48,844 INFO L225 Difference]: With dead ends: 18602 [2023-11-23 22:29:48,844 INFO L226 Difference]: Without dead ends: 18137 [2023-11-23 22:29:48,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1712 GetRequests, 1662 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=681, Invalid=1671, Unknown=0, NotChecked=0, Total=2352 [2023-11-23 22:29:48,852 INFO L413 NwaCegarLoop]: 5362 mSDtfsCounter, 20104 mSDsluCounter, 63873 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20166 SdHoareTripleChecker+Valid, 69235 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:48,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20166 Valid, 69235 Invalid, 2426 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [87 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 22:29:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18137 states. [2023-11-23 22:29:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18137 to 7821. [2023-11-23 22:29:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7821 states, 7730 states have (on average 1.4464424320827942) internal successors, (11181), 7731 states have internal predecessors, (11181), 87 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-23 22:29:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7821 states to 7821 states and 11355 transitions. [2023-11-23 22:29:49,226 INFO L78 Accepts]: Start accepts. Automaton has 7821 states and 11355 transitions. Word has length 846 [2023-11-23 22:29:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:49,228 INFO L495 AbstractCegarLoop]: Abstraction has 7821 states and 11355 transitions. [2023-11-23 22:29:49,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 59.629629629629626) internal successors, (1610), 27 states have internal predecessors, (1610), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 22:29:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 7821 states and 11355 transitions. [2023-11-23 22:29:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1759 [2023-11-23 22:29:49,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:49,275 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:49,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:49,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:49,491 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:49,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash 269750645, now seen corresponding path program 2 times [2023-11-23 22:29:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171097694] [2023-11-23 22:29:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:50,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:50,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453463135] [2023-11-23 22:29:50,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:29:50,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:50,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:50,248 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:50,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 22:29:52,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 22:29:52,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:29:52,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 22:29:52,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:29:52,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 22:29:52,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 22:29:52,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 23 [2023-11-23 22:29:52,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17561 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17561 trivial. 0 not checked. [2023-11-23 22:29:52,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:29:52,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:29:52,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171097694] [2023-11-23 22:29:52,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 22:29:52,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453463135] [2023-11-23 22:29:52,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453463135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:29:52,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:29:52,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 22:29:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305161654] [2023-11-23 22:29:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:29:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 22:29:52,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:29:52,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 22:29:52,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:29:52,931 INFO L87 Difference]: Start difference. First operand 7821 states and 11355 transitions. Second operand has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:29:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:29:54,081 INFO L93 Difference]: Finished difference Result 8696 states and 12615 transitions. [2023-11-23 22:29:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:29:54,082 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1758 [2023-11-23 22:29:54,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:29:54,105 INFO L225 Difference]: With dead ends: 8696 [2023-11-23 22:29:54,105 INFO L226 Difference]: Without dead ends: 8237 [2023-11-23 22:29:54,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1764 GetRequests, 1749 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-11-23 22:29:54,110 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 546 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 22:29:54,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 2516 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 22:29:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8237 states. [2023-11-23 22:29:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8237 to 7891. [2023-11-23 22:29:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7891 states, 7800 states have (on average 1.4437179487179488) internal successors, (11261), 7801 states have internal predecessors, (11261), 87 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-23 22:29:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7891 states to 7891 states and 11435 transitions. [2023-11-23 22:29:54,352 INFO L78 Accepts]: Start accepts. Automaton has 7891 states and 11435 transitions. Word has length 1758 [2023-11-23 22:29:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:29:54,355 INFO L495 AbstractCegarLoop]: Abstraction has 7891 states and 11435 transitions. [2023-11-23 22:29:54,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:29:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 7891 states and 11435 transitions. [2023-11-23 22:29:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1759 [2023-11-23 22:29:54,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:29:54,400 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:29:54,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 22:29:54,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 22:29:54,615 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:29:54,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:29:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash -157781903, now seen corresponding path program 1 times [2023-11-23 22:29:54,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:29:54,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980173754] [2023-11-23 22:29:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:54,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:29:55,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 22:29:55,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675469886] [2023-11-23 22:29:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:29:55,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:29:55,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:29:55,363 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:29:55,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8198123e-60ab-4de2-9d33-2f3a49a9cd3e/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process