./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:28:05,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:28:05,138 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:28:05,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:28:05,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:28:05,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:28:05,175 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:28:05,175 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:28:05,176 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:28:05,184 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:28:05,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:28:05,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:28:05,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:28:05,189 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:28:05,189 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:28:05,192 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:28:05,192 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:28:05,193 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:28:05,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:28:05,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:28:05,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:28:05,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:28:05,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:28:05,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:28:05,196 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:28:05,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:28:05,196 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:28:05,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:28:05,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:28:05,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:28:05,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:28:05,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:05,199 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:28:05,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:28:05,199 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:28:05,200 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:28:05,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:28:05,200 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:28:05,200 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:28:05,201 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:28:05,201 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:28:05,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:28:05,201 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_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2023-11-24 21:28:05,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:28:05,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:28:05,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:28:05,507 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:28:05,507 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:28:05,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-2.i [2023-11-24 21:28:08,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:28:09,152 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:28:09,157 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-2.i [2023-11-24 21:28:09,176 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/data/ca9af3c44/21b6bbae08994772a43261513a51577f/FLAGf75202464 [2023-11-24 21:28:09,192 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/data/ca9af3c44/21b6bbae08994772a43261513a51577f [2023-11-24 21:28:09,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:28:09,204 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:28:09,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:09,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:28:09,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:28:09,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:09,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e70b045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09, skipping insertion in model container [2023-11-24 21:28:09,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:09,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:28:09,679 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_67213bc4-2a13-4fcf-9d86-b1c39e638330/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-2.i[33519,33532] [2023-11-24 21:28:09,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:09,811 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:28:09,851 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_67213bc4-2a13-4fcf-9d86-b1c39e638330/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test1-2.i[33519,33532] [2023-11-24 21:28:09,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:09,998 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:28:09,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09 WrapperNode [2023-11-24 21:28:09,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:10,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:10,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:28:10,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:28:10,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,107 INFO L138 Inliner]: procedures = 177, calls = 227, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 916 [2023-11-24 21:28:10,107 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:10,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:28:10,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:28:10,108 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:28:10,122 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,261 INFO L175 MemorySlicer]: Split 211 memory accesses to 3 slices as follows [2, 5, 204]. 97 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 51 writes are split as follows [0, 1, 50]. [2023-11-24 21:28:10,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:28:10,441 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:28:10,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:28:10,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:28:10,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (1/1) ... [2023-11-24 21:28:10,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:10,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:10,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:28:10,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:28:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:28:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:28:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:28:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:28:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:28:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:28:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-24 21:28:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-24 21:28:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-24 21:28:10,576 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-24 21:28:10,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-24 21:28:10,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-24 21:28:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:28:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:28:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:28:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:28:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:28:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:28:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:28:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:28:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:28:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:28:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:28:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:28:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:28:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:28:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:28:10,859 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:28:10,861 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:28:12,085 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:28:12,156 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:28:12,156 INFO L309 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-24 21:28:12,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:12 BoogieIcfgContainer [2023-11-24 21:28:12,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:28:12,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:28:12,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:28:12,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:28:12,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:28:09" (1/3) ... [2023-11-24 21:28:12,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5edc70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:28:12, skipping insertion in model container [2023-11-24 21:28:12,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:09" (2/3) ... [2023-11-24 21:28:12,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5edc70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:28:12, skipping insertion in model container [2023-11-24 21:28:12,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:12" (3/3) ... [2023-11-24 21:28:12,171 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test1-2.i [2023-11-24 21:28:12,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:28:12,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:28:12,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:28:12,263 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;@31982227, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:28:12,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:28:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 211 states have (on average 1.6919431279620853) internal successors, (357), 212 states have internal predecessors, (357), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:28:12,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 21:28:12,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:12,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:12,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:28:12,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:12,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1953270413, now seen corresponding path program 1 times [2023-11-24 21:28:12,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:12,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108247634] [2023-11-24 21:28:12,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:12,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:12,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:12,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108247634] [2023-11-24 21:28:12,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108247634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:12,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:12,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:12,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920700492] [2023-11-24 21:28:12,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:12,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:12,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:12,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:12,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:12,597 INFO L87 Difference]: Start difference. First operand has 217 states, 211 states have (on average 1.6919431279620853) internal successors, (357), 212 states have internal predecessors, (357), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:12,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:12,819 INFO L93 Difference]: Finished difference Result 605 states and 1019 transitions. [2023-11-24 21:28:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:12,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 21:28:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:12,844 INFO L225 Difference]: With dead ends: 605 [2023-11-24 21:28:12,844 INFO L226 Difference]: Without dead ends: 354 [2023-11-24 21:28:12,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:12,858 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 252 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:12,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 659 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:28:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-24 21:28:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 183. [2023-11-24 21:28:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.4887640449438202) internal successors, (265), 178 states have internal predecessors, (265), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:28:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 271 transitions. [2023-11-24 21:28:12,955 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 271 transitions. Word has length 7 [2023-11-24 21:28:12,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:12,955 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 271 transitions. [2023-11-24 21:28:12,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 271 transitions. [2023-11-24 21:28:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-24 21:28:12,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:12,964 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] [2023-11-24 21:28:12,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:28:12,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:28:12,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:12,965 INFO L85 PathProgramCache]: Analyzing trace with hash -344098266, now seen corresponding path program 1 times [2023-11-24 21:28:12,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:12,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601544107] [2023-11-24 21:28:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:12,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:13,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:13,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601544107] [2023-11-24 21:28:13,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601544107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:13,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:13,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:13,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213276570] [2023-11-24 21:28:13,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:13,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:28:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:28:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:28:13,670 INFO L87 Difference]: Start difference. First operand 183 states and 271 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:13,806 INFO L93 Difference]: Finished difference Result 368 states and 544 transitions. [2023-11-24 21:28:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:28:13,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-11-24 21:28:13,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:13,809 INFO L225 Difference]: With dead ends: 368 [2023-11-24 21:28:13,809 INFO L226 Difference]: Without dead ends: 187 [2023-11-24 21:28:13,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:13,811 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 165 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:13,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 568 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:28:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-24 21:28:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2023-11-24 21:28:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.449438202247191) internal successors, (258), 178 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:28:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 264 transitions. [2023-11-24 21:28:13,831 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 264 transitions. Word has length 82 [2023-11-24 21:28:13,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:13,831 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 264 transitions. [2023-11-24 21:28:13,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:13,832 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 264 transitions. [2023-11-24 21:28:13,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-24 21:28:13,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:13,839 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] [2023-11-24 21:28:13,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:28:13,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:28:13,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash 437847858, now seen corresponding path program 1 times [2023-11-24 21:28:13,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:13,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397541070] [2023-11-24 21:28:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:14,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:14,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397541070] [2023-11-24 21:28:14,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397541070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:14,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:14,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:14,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487118673] [2023-11-24 21:28:14,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:14,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:14,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:14,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:14,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:14,181 INFO L87 Difference]: Start difference. First operand 183 states and 264 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:14,237 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2023-11-24 21:28:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:14,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-11-24 21:28:14,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:14,242 INFO L225 Difference]: With dead ends: 475 [2023-11-24 21:28:14,242 INFO L226 Difference]: Without dead ends: 294 [2023-11-24 21:28:14,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:14,244 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 123 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:14,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 503 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:28:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-24 21:28:14,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-24 21:28:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 289 states have (on average 1.480968858131488) internal successors, (428), 289 states have internal predecessors, (428), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 21:28:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 434 transitions. [2023-11-24 21:28:14,263 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 434 transitions. Word has length 82 [2023-11-24 21:28:14,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:14,264 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 434 transitions. [2023-11-24 21:28:14,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 434 transitions. [2023-11-24 21:28:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-24 21:28:14,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:14,268 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:14,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:28:14,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:28:14,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1522143681, now seen corresponding path program 1 times [2023-11-24 21:28:14,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:14,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840884302] [2023-11-24 21:28:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:28:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:14,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-24 21:28:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 21:28:14,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:14,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840884302] [2023-11-24 21:28:14,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840884302] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:28:14,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569554270] [2023-11-24 21:28:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:14,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:14,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:14,648 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:28:14,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:28:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:15,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:28:15,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 21:28:15,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:28:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 21:28:15,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569554270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:28:15,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:28:15,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2023-11-24 21:28:15,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712739070] [2023-11-24 21:28:15,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:28:15,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:28:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:15,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:28:15,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:15,436 INFO L87 Difference]: Start difference. First operand 294 states and 434 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 6 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 21:28:15,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:15,793 INFO L93 Difference]: Finished difference Result 705 states and 1040 transitions. [2023-11-24 21:28:15,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:28:15,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 6 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 95 [2023-11-24 21:28:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:15,801 INFO L225 Difference]: With dead ends: 705 [2023-11-24 21:28:15,801 INFO L226 Difference]: Without dead ends: 699 [2023-11-24 21:28:15,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:28:15,803 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1241 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:15,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 1258 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 21:28:15,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-24 21:28:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2023-11-24 21:28:15,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 683 states have (on average 1.4538799414348462) internal successors, (993), 683 states have internal predecessors, (993), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-24 21:28:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1017 transitions. [2023-11-24 21:28:15,843 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1017 transitions. Word has length 95 [2023-11-24 21:28:15,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:15,844 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1017 transitions. [2023-11-24 21:28:15,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 6 states have internal predecessors, (172), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 21:28:15,845 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1017 transitions. [2023-11-24 21:28:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-24 21:28:15,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:15,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:15,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:16,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:16,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:28:16,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash 341564932, now seen corresponding path program 1 times [2023-11-24 21:28:16,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:16,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930364471] [2023-11-24 21:28:16,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:16,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:28:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-24 21:28:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 4 proven. 327 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-24 21:28:17,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:17,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930364471] [2023-11-24 21:28:17,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930364471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:28:17,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407164743] [2023-11-24 21:28:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:17,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:17,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:17,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:28:17,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:28:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:18,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:28:18,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 21:28:18,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:28:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 21:28:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407164743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:28:19,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:28:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-24 21:28:19,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428030835] [2023-11-24 21:28:19,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:28:19,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 21:28:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:19,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 21:28:19,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:28:19,405 INFO L87 Difference]: Start difference. First operand 697 states and 1017 transitions. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-24 21:28:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:21,762 INFO L93 Difference]: Finished difference Result 2063 states and 3045 transitions. [2023-11-24 21:28:21,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 21:28:21,771 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 320 [2023-11-24 21:28:21,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:21,788 INFO L225 Difference]: With dead ends: 2063 [2023-11-24 21:28:21,791 INFO L226 Difference]: Without dead ends: 1651 [2023-11-24 21:28:21,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=677, Unknown=0, NotChecked=0, Total=992 [2023-11-24 21:28:21,795 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 8970 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8970 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:21,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8970 Valid, 2997 Invalid, 569 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 21:28:21,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2023-11-24 21:28:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2023-11-24 21:28:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1635 states have (on average 1.4666666666666666) internal successors, (2398), 1635 states have internal predecessors, (2398), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-24 21:28:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2422 transitions. [2023-11-24 21:28:21,921 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2422 transitions. Word has length 320 [2023-11-24 21:28:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:21,923 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2422 transitions. [2023-11-24 21:28:21,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-24 21:28:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2422 transitions. [2023-11-24 21:28:21,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-11-24 21:28:21,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:21,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:21,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:28:22,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67213bc4-2a13-4fcf-9d86-b1c39e638330/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:22,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:28:22,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1976010283, now seen corresponding path program 1 times [2023-11-24 21:28:22,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:22,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627031042] [2023-11-24 21:28:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:22,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms