./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu --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 ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:36,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:36,820 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:02:36,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:36,828 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:36,861 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:36,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:36,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:36,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:36,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:36,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:36,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:36,871 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:36,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:36,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:36,874 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:36,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:36,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:36,876 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:36,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:36,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:36,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:36,878 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:36,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:36,879 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:36,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:36,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:36,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:36,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:36,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:36,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:36,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:36,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:36,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:36,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:36,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:36,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:36,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:36,886 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:36,886 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_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec105877a5c5817dc7d6d5e780267dcadb379ad27281f7d8981115c8613ba085 [2023-11-19 08:02:37,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:37,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:37,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:37,269 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:37,270 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:37,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2023-11-19 08:02:40,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:02:40,808 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:02:40,813 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i [2023-11-19 08:02:40,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/data/78570d403/64d160911b644e4c97bfa8e14aeb0f78/FLAG8088179a8 [2023-11-19 08:02:40,859 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/data/78570d403/64d160911b644e4c97bfa8e14aeb0f78 [2023-11-19 08:02:40,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:02:40,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:02:40,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:40,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:02:40,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:02:40,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:40" (1/1) ... [2023-11-19 08:02:40,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6789f3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:40, skipping insertion in model container [2023-11-19 08:02:40,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:40" (1/1) ... [2023-11-19 08:02:40,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:02:41,407 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_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i[33021,33034] [2023-11-19 08:02:41,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:41,559 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:02:41,607 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_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-1.i[33021,33034] [2023-11-19 08:02:41,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:41,692 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:02:41,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41 WrapperNode [2023-11-19 08:02:41,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:41,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:41,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:02:41,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:02:41,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,799 INFO L138 Inliner]: procedures = 177, calls = 186, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 790 [2023-11-19 08:02:41,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:41,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:02:41,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:02:41,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:02:41,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,893 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:02:41,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:02:41,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:02:41,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:02:41,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (1/1) ... [2023-11-19 08:02:41,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:41,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:42,007 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:02:42,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:02:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:02:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 08:02:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 08:02:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:02:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 08:02:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 08:02:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:02:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:02:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:02:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:02:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:02:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:02:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:02:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:02:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:02:42,239 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:02:42,242 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:43,310 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:43,325 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:43,326 INFO L302 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-19 08:02:43,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:43 BoogieIcfgContainer [2023-11-19 08:02:43,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:43,334 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:43,334 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:43,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:43,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:40" (1/3) ... [2023-11-19 08:02:43,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2458bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:43, skipping insertion in model container [2023-11-19 08:02:43,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:41" (2/3) ... [2023-11-19 08:02:43,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2458bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:43, skipping insertion in model container [2023-11-19 08:02:43,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:43" (3/3) ... [2023-11-19 08:02:43,341 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-1.i [2023-11-19 08:02:43,360 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:43,360 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:02:43,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:43,425 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;@31ea29d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:43,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:02:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 213 states, 196 states have (on average 1.683673469387755) internal successors, (330), 207 states have internal predecessors, (330), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 08:02:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 08:02:43,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:43,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:43,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:43,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:43,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1530581310, now seen corresponding path program 1 times [2023-11-19 08:02:43,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:43,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16105098] [2023-11-19 08:02:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:43,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16105098] [2023-11-19 08:02:43,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16105098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:43,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:43,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:43,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046667059] [2023-11-19 08:02:43,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:43,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:43,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:43,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:43,772 INFO L87 Difference]: Start difference. First operand has 213 states, 196 states have (on average 1.683673469387755) internal successors, (330), 207 states have internal predecessors, (330), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:43,912 INFO L93 Difference]: Finished difference Result 596 states and 1014 transitions. [2023-11-19 08:02:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:43,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 08:02:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:43,930 INFO L225 Difference]: With dead ends: 596 [2023-11-19 08:02:43,930 INFO L226 Difference]: Without dead ends: 381 [2023-11-19 08:02:43,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:43,938 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 252 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:43,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 631 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:43,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-19 08:02:44,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 210. [2023-11-19 08:02:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 194 states have (on average 1.5) internal successors, (291), 204 states have internal predecessors, (291), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 08:02:44,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 317 transitions. [2023-11-19 08:02:44,009 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 317 transitions. Word has length 10 [2023-11-19 08:02:44,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:44,010 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 317 transitions. [2023-11-19 08:02:44,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:44,010 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 317 transitions. [2023-11-19 08:02:44,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 08:02:44,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:44,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:44,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:02:44,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:44,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:44,018 INFO L85 PathProgramCache]: Analyzing trace with hash 545589277, now seen corresponding path program 1 times [2023-11-19 08:02:44,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:44,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899873390] [2023-11-19 08:02:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:44,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:44,101 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:44,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047341671] [2023-11-19 08:02:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:44,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:44,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:44,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:44,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:02:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:44,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:44,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:44,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:44,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:44,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899873390] [2023-11-19 08:02:44,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:44,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047341671] [2023-11-19 08:02:44,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047341671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:44,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:44,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:02:44,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951989975] [2023-11-19 08:02:44,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:44,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:02:44,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:44,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:02:44,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:02:44,535 INFO L87 Difference]: Start difference. First operand 210 states and 317 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:44,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:44,662 INFO L93 Difference]: Finished difference Result 438 states and 662 transitions. [2023-11-19 08:02:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:44,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-19 08:02:44,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:44,669 INFO L225 Difference]: With dead ends: 438 [2023-11-19 08:02:44,669 INFO L226 Difference]: Without dead ends: 231 [2023-11-19 08:02:44,674 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 [2023-11-19 08:02:44,677 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 9 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:44,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 577 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:02:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-19 08:02:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2023-11-19 08:02:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 214 states have (on average 1.4532710280373833) internal successors, (311), 224 states have internal predecessors, (311), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 08:02:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 337 transitions. [2023-11-19 08:02:44,714 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 337 transitions. Word has length 85 [2023-11-19 08:02:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:44,715 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 337 transitions. [2023-11-19 08:02:44,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 337 transitions. [2023-11-19 08:02:44,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 08:02:44,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:44,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:44,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:44,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:44,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:44,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:44,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1038215451, now seen corresponding path program 1 times [2023-11-19 08:02:44,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:44,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654441714] [2023-11-19 08:02:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:44,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:44,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:45,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809304649] [2023-11-19 08:02:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:45,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:45,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:45,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:45,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:02:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:45,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:45,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:45,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:45,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:45,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654441714] [2023-11-19 08:02:45,361 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809304649] [2023-11-19 08:02:45,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809304649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:45,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:45,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:45,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251704514] [2023-11-19 08:02:45,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:45,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:45,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:45,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:45,364 INFO L87 Difference]: Start difference. First operand 230 states and 337 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:45,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:45,468 INFO L93 Difference]: Finished difference Result 444 states and 658 transitions. [2023-11-19 08:02:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:45,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-19 08:02:45,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:45,472 INFO L225 Difference]: With dead ends: 444 [2023-11-19 08:02:45,473 INFO L226 Difference]: Without dead ends: 217 [2023-11-19 08:02:45,474 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 [2023-11-19 08:02:45,477 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 165 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:45,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 713 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:02:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-19 08:02:45,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2023-11-19 08:02:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 200 states have (on average 1.45) internal successors, (290), 210 states have internal predecessors, (290), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 08:02:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 316 transitions. [2023-11-19 08:02:45,522 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 316 transitions. Word has length 85 [2023-11-19 08:02:45,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:45,523 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 316 transitions. [2023-11-19 08:02:45,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:45,523 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 316 transitions. [2023-11-19 08:02:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 08:02:45,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:45,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:45,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 08:02:45,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 08:02:45,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:45,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash 376537641, now seen corresponding path program 1 times [2023-11-19 08:02:45,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:45,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376938140] [2023-11-19 08:02:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:45,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:45,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:45,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708828816] [2023-11-19 08:02:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:45,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:45,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:45,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:45,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:02:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:46,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:02:46,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:46,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:02:46,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376938140] [2023-11-19 08:02:46,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708828816] [2023-11-19 08:02:46,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708828816] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:46,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:46,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-19 08:02:46,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147395137] [2023-11-19 08:02:46,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:46,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:02:46,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:02:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:46,429 INFO L87 Difference]: Start difference. First operand 216 states and 316 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:46,545 INFO L93 Difference]: Finished difference Result 781 states and 1143 transitions. [2023-11-19 08:02:46,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:02:46,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-11-19 08:02:46,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:46,555 INFO L225 Difference]: With dead ends: 781 [2023-11-19 08:02:46,555 INFO L226 Difference]: Without dead ends: 750 [2023-11-19 08:02:46,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:46,560 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 964 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:46,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1291 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:46,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2023-11-19 08:02:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2023-11-19 08:02:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 725 states have (on average 1.4427586206896552) internal successors, (1046), 735 states have internal predecessors, (1046), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 08:02:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1090 transitions. [2023-11-19 08:02:46,628 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1090 transitions. Word has length 85 [2023-11-19 08:02:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:46,628 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 1090 transitions. [2023-11-19 08:02:46,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1090 transitions. [2023-11-19 08:02:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-11-19 08:02:46,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:46,640 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:46,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 08:02:46,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:46,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:46,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:46,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1997604350, now seen corresponding path program 2 times [2023-11-19 08:02:46,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:46,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103076497] [2023-11-19 08:02:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:46,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:47,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:47,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417976241] [2023-11-19 08:02:47,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:02:47,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:47,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:47,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:47,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:02:47,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:02:47,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:47,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:02:47,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:48,637 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-11-19 08:02:48,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:48,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:48,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103076497] [2023-11-19 08:02:48,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:48,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417976241] [2023-11-19 08:02:48,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417976241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:48,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:48,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:02:48,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208929328] [2023-11-19 08:02:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:48,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:02:48,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:48,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:02:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:48,648 INFO L87 Difference]: Start difference. First operand 750 states and 1090 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:48,908 INFO L93 Difference]: Finished difference Result 1369 states and 1987 transitions. [2023-11-19 08:02:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:02:48,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2023-11-19 08:02:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:48,915 INFO L225 Difference]: With dead ends: 1369 [2023-11-19 08:02:48,915 INFO L226 Difference]: Without dead ends: 748 [2023-11-19 08:02:48,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:02:48,918 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 123 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:48,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 874 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:02:48,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-11-19 08:02:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2023-11-19 08:02:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 723 states have (on average 1.4426002766251729) internal successors, (1043), 733 states have internal predecessors, (1043), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 08:02:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1087 transitions. [2023-11-19 08:02:48,955 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1087 transitions. Word has length 310 [2023-11-19 08:02:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:48,956 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 1087 transitions. [2023-11-19 08:02:48,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:02:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1087 transitions. [2023-11-19 08:02:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-11-19 08:02:48,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:48,963 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-11-19 08:02:48,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:49,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:49,188 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:49,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:49,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1159946007, now seen corresponding path program 1 times [2023-11-19 08:02:49,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:49,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605616821] [2023-11-19 08:02:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:49,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:49,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:49,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21810191] [2023-11-19 08:02:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:49,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:49,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:49,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:49,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:02:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:50,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:02:50,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:02:50,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:02:51,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:51,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605616821] [2023-11-19 08:02:51,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:51,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21810191] [2023-11-19 08:02:51,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21810191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:51,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:51,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-19 08:02:51,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81921887] [2023-11-19 08:02:51,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:51,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:02:51,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:51,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:02:51,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:02:51,201 INFO L87 Difference]: Start difference. First operand 748 states and 1087 transitions. Second operand has 12 states, 12 states have (on average 52.0) internal successors, (624), 12 states have internal predecessors, (624), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 08:02:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:51,552 INFO L93 Difference]: Finished difference Result 1847 states and 2691 transitions. [2023-11-19 08:02:51,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:02:51,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 52.0) internal successors, (624), 12 states have internal predecessors, (624), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 325 [2023-11-19 08:02:51,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:51,566 INFO L225 Difference]: With dead ends: 1847 [2023-11-19 08:02:51,566 INFO L226 Difference]: Without dead ends: 1816 [2023-11-19 08:02:51,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:02:51,568 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 3189 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3215 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:51,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3215 Valid, 2877 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:02:51,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2023-11-19 08:02:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1816. [2023-11-19 08:02:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1773 states have (on average 1.4410603496897914) internal successors, (2555), 1783 states have internal predecessors, (2555), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 08:02:51,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2635 transitions. [2023-11-19 08:02:51,636 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2635 transitions. Word has length 325 [2023-11-19 08:02:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:51,637 INFO L495 AbstractCegarLoop]: Abstraction has 1816 states and 2635 transitions. [2023-11-19 08:02:51,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 52.0) internal successors, (624), 12 states have internal predecessors, (624), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 08:02:51,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2635 transitions. [2023-11-19 08:02:51,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-19 08:02:51,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:51,665 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2023-11-19 08:02:51,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:51,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:51,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:51,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash 735373321, now seen corresponding path program 2 times [2023-11-19 08:02:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137083059] [2023-11-19 08:02:51,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:51,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:52,248 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:52,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649414450] [2023-11-19 08:02:52,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:02:52,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:52,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:52,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:52,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:02:59,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:02:59,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:59,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 3775 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 08:02:59,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:59,932 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 16 treesize of output 17 [2023-11-19 08:03:00,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:03:00,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 26 [2023-11-19 08:03:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 289 proven. 0 refuted. 0 times theorem prover too weak. 3082 trivial. 0 not checked. [2023-11-19 08:03:00,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:00,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:00,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137083059] [2023-11-19 08:03:00,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:00,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649414450] [2023-11-19 08:03:00,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649414450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:00,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:00,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 08:03:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41821310] [2023-11-19 08:03:00,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:00,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:03:00,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:00,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:03:00,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:00,841 INFO L87 Difference]: Start difference. First operand 1816 states and 2635 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:03:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:03,830 INFO L93 Difference]: Finished difference Result 3592 states and 5203 transitions. [2023-11-19 08:03:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:03:03,832 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 775 [2023-11-19 08:03:03,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:03,846 INFO L225 Difference]: With dead ends: 3592 [2023-11-19 08:03:03,846 INFO L226 Difference]: Without dead ends: 1857 [2023-11-19 08:03:03,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:03:03,852 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 499 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:03,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 2160 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 08:03:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2023-11-19 08:03:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1848. [2023-11-19 08:03:03,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1805 states have (on average 1.43601108033241) internal successors, (2592), 1815 states have internal predecessors, (2592), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 08:03:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 2672 transitions. [2023-11-19 08:03:03,935 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 2672 transitions. Word has length 775 [2023-11-19 08:03:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:03,935 INFO L495 AbstractCegarLoop]: Abstraction has 1848 states and 2672 transitions. [2023-11-19 08:03:03,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:03:03,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 2672 transitions. [2023-11-19 08:03:03,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-19 08:03:03,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:03,966 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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] [2023-11-19 08:03:04,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:04,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:04,191 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:04,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1313766261, now seen corresponding path program 1 times [2023-11-19 08:03:04,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:04,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14974536] [2023-11-19 08:03:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:04,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:04,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:04,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [31757882] [2023-11-19 08:03:04,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:04,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:04,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:04,575 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:04,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:03:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:06,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 3773 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:03:06,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 3145 trivial. 0 not checked. [2023-11-19 08:03:06,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:06,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:06,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14974536] [2023-11-19 08:03:06,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31757882] [2023-11-19 08:03:06,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31757882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:06,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:06,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:03:06,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448618362] [2023-11-19 08:03:06,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:06,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:06,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:06,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:06,242 INFO L87 Difference]: Start difference. First operand 1848 states and 2672 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:03:06,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:06,424 INFO L93 Difference]: Finished difference Result 4663 states and 6858 transitions. [2023-11-19 08:03:06,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:06,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 775 [2023-11-19 08:03:06,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:06,444 INFO L225 Difference]: With dead ends: 4663 [2023-11-19 08:03:06,444 INFO L226 Difference]: Without dead ends: 2916 [2023-11-19 08:03:06,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:06,448 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 142 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:06,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1143 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:03:06,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2023-11-19 08:03:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2055. [2023-11-19 08:03:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2055 states, 2012 states have (on average 1.3986083499005963) internal successors, (2814), 2022 states have internal predecessors, (2814), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 08:03:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 2894 transitions. [2023-11-19 08:03:06,588 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 2894 transitions. Word has length 775 [2023-11-19 08:03:06,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:06,589 INFO L495 AbstractCegarLoop]: Abstraction has 2055 states and 2894 transitions. [2023-11-19 08:03:06,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:03:06,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 2894 transitions. [2023-11-19 08:03:06,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-11-19 08:03:06,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:06,607 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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] [2023-11-19 08:03:06,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:06,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:06,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:06,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:06,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1292134931, now seen corresponding path program 1 times [2023-11-19 08:03:06,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:06,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726368927] [2023-11-19 08:03:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:06,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:07,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:07,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709976213] [2023-11-19 08:03:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:07,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:07,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:07,204 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:07,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:03:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:24,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 3776 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 08:03:24,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:24,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-19 08:03:25,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:03:25,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 27 [2023-11-19 08:03:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 883 proven. 32 refuted. 0 times theorem prover too weak. 2456 trivial. 0 not checked. [2023-11-19 08:03:25,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:03:26,128 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:03:26,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 24 [2023-11-19 08:03:27,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:27,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726368927] [2023-11-19 08:03:27,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:27,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709976213] [2023-11-19 08:03:27,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709976213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:27,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:27,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-19 08:03:27,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452960129] [2023-11-19 08:03:27,598 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:03:27,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:03:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:27,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:03:27,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-11-19 08:03:27,601 INFO L87 Difference]: Start difference. First operand 2055 states and 2894 transitions. Second operand has 13 states, 13 states have (on average 15.384615384615385) internal successors, (200), 13 states have internal predecessors, (200), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:03:32,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:32,179 INFO L93 Difference]: Finished difference Result 3812 states and 5375 transitions. [2023-11-19 08:03:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:03:32,181 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.384615384615385) internal successors, (200), 13 states have internal predecessors, (200), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 776 [2023-11-19 08:03:32,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:32,195 INFO L225 Difference]: With dead ends: 3812 [2023-11-19 08:03:32,196 INFO L226 Difference]: Without dead ends: 2069 [2023-11-19 08:03:32,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1488 GetRequests, 1459 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2023-11-19 08:03:32,202 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 946 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 3360 SdHoareTripleChecker+Invalid, 2615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:32,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 3360 Invalid, 2615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-19 08:03:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2023-11-19 08:03:32,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 2064. [2023-11-19 08:03:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2021 states have (on average 1.396833250865908) internal successors, (2823), 2031 states have internal predecessors, (2823), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-19 08:03:32,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2903 transitions. [2023-11-19 08:03:32,299 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2903 transitions. Word has length 776 [2023-11-19 08:03:32,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:32,300 INFO L495 AbstractCegarLoop]: Abstraction has 2064 states and 2903 transitions. [2023-11-19 08:03:32,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.384615384615385) internal successors, (200), 13 states have internal predecessors, (200), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:03:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2903 transitions. [2023-11-19 08:03:32,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2023-11-19 08:03:32,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:32,312 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2023-11-19 08:03:32,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e9c5b80-bbe4-4da3-bf4e-80bb853ee219/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0