./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:15:03,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:15:03,171 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 17:15:03,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:15:03,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:15:03,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:15:03,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:15:03,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:15:03,197 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:15:03,197 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:15:03,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:15:03,198 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:15:03,198 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:15:03,199 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:15:03,199 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:15:03,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:15:03,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 17:15:03,201 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:15:03,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:15:03,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:15:03,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:15:03,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 17:15:03,203 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:15:03,203 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 17:15:03,204 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:15:03,204 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:15:03,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 17:15:03,205 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:15:03,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:15:03,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:15:03,206 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:15:03,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:15:03,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:15:03,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:15:03,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:15:03,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 17:15:03,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:15:03,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:15:03,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:15:03,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:15:03,221 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:15:03,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:15:03,223 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_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-08 17:15:03,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:15:03,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:15:03,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:15:03,522 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:15:03,523 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:15:03,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-1.i Unable to find full path for "g++" [2024-11-08 17:15:05,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:15:05,819 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:15:05,820 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-1.i [2024-11-08 17:15:05,847 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/data/bcd24e6b2/810ab19a8ee849ef951aa16f07bde914/FLAG5f5d82974 [2024-11-08 17:15:05,870 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/data/bcd24e6b2/810ab19a8ee849ef951aa16f07bde914 [2024-11-08 17:15:05,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:15:05,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:15:05,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:15:05,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:15:05,885 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:15:05,886 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:15:05" (1/1) ... [2024-11-08 17:15:05,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2151eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:05, skipping insertion in model container [2024-11-08 17:15:05,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:15:05" (1/1) ... [2024-11-08 17:15:05,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:15:06,602 WARN L250 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_8abb5121-e7fd-47b9-ba18-3a0841b4da86/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-1.i[37435,37448] [2024-11-08 17:15:06,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:15:06,783 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:15:06,824 WARN L250 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_8abb5121-e7fd-47b9-ba18-3a0841b4da86/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-1.i[37435,37448] [2024-11-08 17:15:06,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:15:06,976 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:15:06,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06 WrapperNode [2024-11-08 17:15:06,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:15:06,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:15:06,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:15:06,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:15:06,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,125 INFO L138 Inliner]: procedures = 207, calls = 221, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1247 [2024-11-08 17:15:07,126 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:15:07,127 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:15:07,127 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:15:07,127 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:15:07,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,152 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,308 INFO L175 MemorySlicer]: Split 206 memory accesses to 3 slices as follows [2, 170, 34]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 42, 4]. [2024-11-08 17:15:07,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,425 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:15:07,445 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:15:07,446 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:15:07,446 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:15:07,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (1/1) ... [2024-11-08 17:15:07,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:15:07,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:07,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:15:07,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:15:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-08 17:15:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-08 17:15:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-08 17:15:07,551 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-08 17:15:07,551 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-08 17:15:07,551 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-08 17:15:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:15:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:15:07,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:15:07,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:15:07,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:15:07,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:15:07,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:15:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 17:15:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:15:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:15:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 17:15:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:15:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:15:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:15:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:15:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:15:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:15:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:15:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 17:15:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:15:07,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:15:07,789 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:15:07,791 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:15:09,533 INFO L? ?]: Removed 296 outVars from TransFormulas that were not future-live. [2024-11-08 17:15:09,533 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:15:09,566 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:15:09,566 INFO L316 CfgBuilder]: Removed 50 assume(true) statements. [2024-11-08 17:15:09,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:15:09 BoogieIcfgContainer [2024-11-08 17:15:09,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:15:09,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:15:09,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:15:09,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:15:09,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:15:05" (1/3) ... [2024-11-08 17:15:09,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edd7f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:15:09, skipping insertion in model container [2024-11-08 17:15:09,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:15:06" (2/3) ... [2024-11-08 17:15:09,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edd7f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:15:09, skipping insertion in model container [2024-11-08 17:15:09,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:15:09" (3/3) ... [2024-11-08 17:15:09,580 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test2-1.i [2024-11-08 17:15:09,599 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:15:09,599 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 17:15:09,692 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:15:09,701 INFO L333 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, 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;@3b3d44f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:15:09,701 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 17:15:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand has 369 states, 363 states have (on average 1.6143250688705235) internal successors, (586), 364 states have internal predecessors, (586), 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) [2024-11-08 17:15:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 17:15:09,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:09,718 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:09,719 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:09,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1101289882, now seen corresponding path program 1 times [2024-11-08 17:15:09,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:09,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754614437] [2024-11-08 17:15:09,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:09,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:09,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:09,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754614437] [2024-11-08 17:15:09,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754614437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:09,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:09,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:15:09,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981701893] [2024-11-08 17:15:09,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:09,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 17:15:09,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:10,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 17:15:10,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:15:10,017 INFO L87 Difference]: Start difference. First operand has 369 states, 363 states have (on average 1.6143250688705235) internal successors, (586), 364 states have internal predecessors, (586), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-08 17:15:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:10,111 INFO L93 Difference]: Finished difference Result 735 states and 1180 transitions. [2024-11-08 17:15:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 17:15:10,116 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2024-11-08 17:15:10,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:10,127 INFO L225 Difference]: With dead ends: 735 [2024-11-08 17:15:10,128 INFO L226 Difference]: Without dead ends: 365 [2024-11-08 17:15:10,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 17:15:10,136 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:10,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:15:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-08 17:15:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2024-11-08 17:15:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 360 states have (on average 1.461111111111111) internal successors, (526), 360 states have internal predecessors, (526), 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) [2024-11-08 17:15:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 532 transitions. [2024-11-08 17:15:10,198 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 532 transitions. Word has length 11 [2024-11-08 17:15:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:10,199 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 532 transitions. [2024-11-08 17:15:10,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-08 17:15:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 532 transitions. [2024-11-08 17:15:10,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 17:15:10,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:10,204 INFO L215 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] [2024-11-08 17:15:10,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:15:10,205 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:10,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash -176217900, now seen corresponding path program 1 times [2024-11-08 17:15:10,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:10,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157922071] [2024-11-08 17:15:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:10,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:10,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:10,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157922071] [2024-11-08 17:15:10,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157922071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:10,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:10,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:15:10,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205911724] [2024-11-08 17:15:10,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:10,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:15:10,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:10,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:15:10,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:15:10,769 INFO L87 Difference]: Start difference. First operand 365 states and 532 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-11-08 17:15:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:10,925 INFO L93 Difference]: Finished difference Result 482 states and 701 transitions. [2024-11-08 17:15:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:15:10,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2024-11-08 17:15:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:10,928 INFO L225 Difference]: With dead ends: 482 [2024-11-08 17:15:10,932 INFO L226 Difference]: Without dead ends: 322 [2024-11-08 17:15:10,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:15:10,934 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 33 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:10,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1263 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:15:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-08 17:15:10,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2024-11-08 17:15:10,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 317 states have (on average 1.4100946372239747) internal successors, (447), 317 states have internal predecessors, (447), 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) [2024-11-08 17:15:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 453 transitions. [2024-11-08 17:15:10,970 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 453 transitions. Word has length 66 [2024-11-08 17:15:10,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:10,971 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 453 transitions. [2024-11-08 17:15:10,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-11-08 17:15:10,972 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 453 transitions. [2024-11-08 17:15:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 17:15:10,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:10,978 INFO L215 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] [2024-11-08 17:15:10,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:15:10,978 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:10,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2068909410, now seen corresponding path program 1 times [2024-11-08 17:15:10,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:10,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578652368] [2024-11-08 17:15:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:10,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:11,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:11,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578652368] [2024-11-08 17:15:11,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578652368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:11,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:11,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:15:11,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238716070] [2024-11-08 17:15:11,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:11,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:15:11,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:11,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:15:11,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:15:11,192 INFO L87 Difference]: Start difference. First operand 322 states and 453 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-08 17:15:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:11,263 INFO L93 Difference]: Finished difference Result 439 states and 611 transitions. [2024-11-08 17:15:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:15:11,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-08 17:15:11,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:11,265 INFO L225 Difference]: With dead ends: 439 [2024-11-08 17:15:11,265 INFO L226 Difference]: Without dead ends: 322 [2024-11-08 17:15:11,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:15:11,267 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 1 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:11,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 860 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:15:11,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-08 17:15:11,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2024-11-08 17:15:11,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 317 states have (on average 1.4006309148264984) internal successors, (444), 317 states have internal predecessors, (444), 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) [2024-11-08 17:15:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 450 transitions. [2024-11-08 17:15:11,284 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 450 transitions. Word has length 66 [2024-11-08 17:15:11,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:11,284 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 450 transitions. [2024-11-08 17:15:11,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-08 17:15:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 450 transitions. [2024-11-08 17:15:11,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 17:15:11,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:11,293 INFO L215 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] [2024-11-08 17:15:11,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:15:11,293 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:11,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:11,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1309665826, now seen corresponding path program 1 times [2024-11-08 17:15:11,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:11,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016817575] [2024-11-08 17:15:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:11,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:11,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:11,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016817575] [2024-11-08 17:15:11,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016817575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:11,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:11,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:15:11,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366502705] [2024-11-08 17:15:11,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:11,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:15:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:15:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:15:11,847 INFO L87 Difference]: Start difference. First operand 322 states and 450 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2024-11-08 17:15:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:12,079 INFO L93 Difference]: Finished difference Result 756 states and 1050 transitions. [2024-11-08 17:15:12,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:15:12,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 66 [2024-11-08 17:15:12,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:12,083 INFO L225 Difference]: With dead ends: 756 [2024-11-08 17:15:12,084 INFO L226 Difference]: Without dead ends: 636 [2024-11-08 17:15:12,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:15:12,088 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 431 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:12,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 2811 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:15:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2024-11-08 17:15:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 324. [2024-11-08 17:15:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 319 states have (on average 1.3981191222570533) internal successors, (446), 319 states have internal predecessors, (446), 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) [2024-11-08 17:15:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 452 transitions. [2024-11-08 17:15:12,145 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 452 transitions. Word has length 66 [2024-11-08 17:15:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:12,147 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 452 transitions. [2024-11-08 17:15:12,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2024-11-08 17:15:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 452 transitions. [2024-11-08 17:15:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-08 17:15:12,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:12,159 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:12,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:15:12,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:12,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1432733550, now seen corresponding path program 1 times [2024-11-08 17:15:12,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:12,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218049638] [2024-11-08 17:15:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:12,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:12,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:12,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218049638] [2024-11-08 17:15:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218049638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:12,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:15:12,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334576898] [2024-11-08 17:15:12,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:12,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:15:12,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:12,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:15:12,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:15:12,611 INFO L87 Difference]: Start difference. First operand 324 states and 452 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-11-08 17:15:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:12,724 INFO L93 Difference]: Finished difference Result 600 states and 831 transitions. [2024-11-08 17:15:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:15:12,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 142 [2024-11-08 17:15:12,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:12,727 INFO L225 Difference]: With dead ends: 600 [2024-11-08 17:15:12,728 INFO L226 Difference]: Without dead ends: 281 [2024-11-08 17:15:12,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:15:12,730 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 30 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:12,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1010 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:15:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-08 17:15:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2024-11-08 17:15:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 276 states have (on average 1.3297101449275361) internal successors, (367), 276 states have internal predecessors, (367), 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) [2024-11-08 17:15:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 373 transitions. [2024-11-08 17:15:12,746 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 373 transitions. Word has length 142 [2024-11-08 17:15:12,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:12,746 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 373 transitions. [2024-11-08 17:15:12,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-11-08 17:15:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 373 transitions. [2024-11-08 17:15:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-08 17:15:12,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:12,750 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:12,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:15:12,751 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:12,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:12,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1934720738, now seen corresponding path program 1 times [2024-11-08 17:15:12,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:12,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048503734] [2024-11-08 17:15:12,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:12,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:15:13,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:13,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048503734] [2024-11-08 17:15:13,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048503734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:13,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:13,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:15:13,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243063147] [2024-11-08 17:15:13,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:13,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:15:13,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:13,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:15:13,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:15:13,039 INFO L87 Difference]: Start difference. First operand 281 states and 373 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2024-11-08 17:15:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:13,113 INFO L93 Difference]: Finished difference Result 739 states and 984 transitions. [2024-11-08 17:15:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:15:13,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2024-11-08 17:15:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:13,116 INFO L225 Difference]: With dead ends: 739 [2024-11-08 17:15:13,117 INFO L226 Difference]: Without dead ends: 463 [2024-11-08 17:15:13,117 INFO L431 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 [2024-11-08 17:15:13,122 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 177 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:13,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 819 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:15:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-08 17:15:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2024-11-08 17:15:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 456 states have (on average 1.331140350877193) internal successors, (607), 456 states have internal predecessors, (607), 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) [2024-11-08 17:15:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 613 transitions. [2024-11-08 17:15:13,140 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 613 transitions. Word has length 142 [2024-11-08 17:15:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:13,141 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 613 transitions. [2024-11-08 17:15:13,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2024-11-08 17:15:13,141 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 613 transitions. [2024-11-08 17:15:13,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-08 17:15:13,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:13,143 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:13,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:15:13,143 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:13,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:13,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1502177055, now seen corresponding path program 1 times [2024-11-08 17:15:13,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:13,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032543623] [2024-11-08 17:15:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:13,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:13,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 17:15:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:13,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:15:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:15:13,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:13,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032543623] [2024-11-08 17:15:13,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032543623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:13,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:13,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:15:13,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904671258] [2024-11-08 17:15:13,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:13,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:15:13,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:13,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:15:13,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:15:13,547 INFO L87 Difference]: Start difference. First operand 461 states and 613 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:15:13,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:13,822 INFO L93 Difference]: Finished difference Result 890 states and 1193 transitions. [2024-11-08 17:15:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:15:13,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-08 17:15:13,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:13,828 INFO L225 Difference]: With dead ends: 890 [2024-11-08 17:15:13,830 INFO L226 Difference]: Without dead ends: 464 [2024-11-08 17:15:13,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:15:13,832 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 3 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:13,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 993 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:15:13,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-11-08 17:15:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 461. [2024-11-08 17:15:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 456 states have (on average 1.3179824561403508) internal successors, (601), 456 states have internal predecessors, (601), 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) [2024-11-08 17:15:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 607 transitions. [2024-11-08 17:15:13,854 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 607 transitions. Word has length 157 [2024-11-08 17:15:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:13,854 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 607 transitions. [2024-11-08 17:15:13,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:15:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 607 transitions. [2024-11-08 17:15:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-08 17:15:13,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:13,857 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:13,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:15:13,858 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:13,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash -795580449, now seen corresponding path program 1 times [2024-11-08 17:15:13,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:13,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421541427] [2024-11-08 17:15:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:13,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:14,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 17:15:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:14,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:15:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:15:14,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:14,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421541427] [2024-11-08 17:15:14,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421541427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:14,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:15:14,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:15:14,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687482917] [2024-11-08 17:15:14,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:14,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:15:14,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:14,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:15:14,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:15:14,281 INFO L87 Difference]: Start difference. First operand 461 states and 607 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:15:15,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:15,019 INFO L93 Difference]: Finished difference Result 914 states and 1211 transitions. [2024-11-08 17:15:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:15:15,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-08 17:15:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:15,023 INFO L225 Difference]: With dead ends: 914 [2024-11-08 17:15:15,023 INFO L226 Difference]: Without dead ends: 545 [2024-11-08 17:15:15,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:15:15,025 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 782 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:15,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1396 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:15:15,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-08 17:15:15,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 368. [2024-11-08 17:15:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 363 states have (on average 1.3140495867768596) internal successors, (477), 363 states have internal predecessors, (477), 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) [2024-11-08 17:15:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 483 transitions. [2024-11-08 17:15:15,043 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 483 transitions. Word has length 157 [2024-11-08 17:15:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:15,044 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 483 transitions. [2024-11-08 17:15:15,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:15:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 483 transitions. [2024-11-08 17:15:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-08 17:15:15,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:15,048 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:15,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:15:15,048 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:15,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash -390217260, now seen corresponding path program 1 times [2024-11-08 17:15:15,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:15,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166120110] [2024-11-08 17:15:15,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:15,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:15,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 17:15:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:15,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:15:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:15:15,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:15,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166120110] [2024-11-08 17:15:15,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166120110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:15,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504251000] [2024-11-08 17:15:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:15,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:15,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:15,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:15,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:15:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:16,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:15:16,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:16,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:15:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:15:18,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:15:18,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504251000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:18,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:15:18,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-08 17:15:18,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243704953] [2024-11-08 17:15:18,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:18,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:15:18,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:18,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:15:18,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:15:18,130 INFO L87 Difference]: Start difference. First operand 368 states and 483 transitions. Second operand has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:15:19,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:19,142 INFO L93 Difference]: Finished difference Result 658 states and 866 transitions. [2024-11-08 17:15:19,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:15:19,143 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2024-11-08 17:15:19,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:19,146 INFO L225 Difference]: With dead ends: 658 [2024-11-08 17:15:19,146 INFO L226 Difference]: Without dead ends: 541 [2024-11-08 17:15:19,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:15:19,147 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 362 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:19,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1705 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:15:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-08 17:15:19,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 405. [2024-11-08 17:15:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 400 states have (on average 1.2875) internal successors, (515), 400 states have internal predecessors, (515), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:15:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 521 transitions. [2024-11-08 17:15:19,169 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 521 transitions. Word has length 167 [2024-11-08 17:15:19,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:19,169 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 521 transitions. [2024-11-08 17:15:19,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:15:19,170 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 521 transitions. [2024-11-08 17:15:19,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-08 17:15:19,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:19,172 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:19,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:15:19,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:19,378 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:19,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash -222561687, now seen corresponding path program 1 times [2024-11-08 17:15:19,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:19,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515146259] [2024-11-08 17:15:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:19,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-08 17:15:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:19,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-08 17:15:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:15:19,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:19,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515146259] [2024-11-08 17:15:19,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515146259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:19,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357604928] [2024-11-08 17:15:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:19,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:19,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:19,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:19,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:15:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:20,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 17:15:20,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:20,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:15:20,515 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 [2024-11-08 17:15:21,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:15:21,192 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 86 treesize of output 58 [2024-11-08 17:15:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:15:21,506 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:15:21,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357604928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:21,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:15:21,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-08 17:15:21,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096403584] [2024-11-08 17:15:21,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:21,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:15:21,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:21,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:15:21,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:15:21,510 INFO L87 Difference]: Start difference. First operand 405 states and 521 transitions. Second operand has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:15:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:23,157 INFO L93 Difference]: Finished difference Result 901 states and 1183 transitions. [2024-11-08 17:15:23,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:15:23,158 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2024-11-08 17:15:23,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:23,160 INFO L225 Difference]: With dead ends: 901 [2024-11-08 17:15:23,161 INFO L226 Difference]: Without dead ends: 541 [2024-11-08 17:15:23,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:15:23,162 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 464 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:23,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 2039 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:15:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-08 17:15:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 405. [2024-11-08 17:15:23,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 400 states have (on average 1.285) internal successors, (514), 400 states have internal predecessors, (514), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:15:23,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 520 transitions. [2024-11-08 17:15:23,182 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 520 transitions. Word has length 168 [2024-11-08 17:15:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:23,183 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 520 transitions. [2024-11-08 17:15:23,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.636363636363637) internal successors, (161), 11 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:15:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 520 transitions. [2024-11-08 17:15:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-08 17:15:23,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:23,185 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:23,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:15:23,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 17:15:23,386 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:23,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash -19853303, now seen corresponding path program 1 times [2024-11-08 17:15:23,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:23,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284244602] [2024-11-08 17:15:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:23,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:24,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:15:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:24,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-08 17:15:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:15:24,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:24,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284244602] [2024-11-08 17:15:24,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284244602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:24,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486227289] [2024-11-08 17:15:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:24,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:24,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:24,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:24,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:15:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:25,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 17:15:25,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:25,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:15:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:15:25,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:15:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486227289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:15:25,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:15:25,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 8 [2024-11-08 17:15:25,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087044133] [2024-11-08 17:15:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:15:25,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:15:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:15:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:15:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:15:25,111 INFO L87 Difference]: Start difference. First operand 405 states and 520 transitions. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:15:25,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:25,253 INFO L93 Difference]: Finished difference Result 772 states and 997 transitions. [2024-11-08 17:15:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:15:25,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2024-11-08 17:15:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:25,256 INFO L225 Difference]: With dead ends: 772 [2024-11-08 17:15:25,256 INFO L226 Difference]: Without dead ends: 462 [2024-11-08 17:15:25,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:15:25,257 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 190 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:25,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1735 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:15:25,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-08 17:15:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 408. [2024-11-08 17:15:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 402 states have (on average 1.2860696517412935) internal successors, (517), 403 states have internal predecessors, (517), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:15:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 524 transitions. [2024-11-08 17:15:25,282 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 524 transitions. Word has length 169 [2024-11-08 17:15:25,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:25,282 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 524 transitions. [2024-11-08 17:15:25,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:15:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 524 transitions. [2024-11-08 17:15:25,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-08 17:15:25,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:25,285 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:25,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:15:25,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 17:15:25,490 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:15:25,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:25,490 INFO L85 PathProgramCache]: Analyzing trace with hash -55432597, now seen corresponding path program 1 times [2024-11-08 17:15:25,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:25,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101534044] [2024-11-08 17:15:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:25,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:26,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:15:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:26,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 17:15:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:15:26,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:15:26,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101534044] [2024-11-08 17:15:26,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101534044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:15:26,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562675989] [2024-11-08 17:15:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:26,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:26,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:15:26,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:15:26,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:15:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:15:26,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 17:15:26,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:15:26,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:15:40,173 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:15:52,194 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:16:00,208 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:16:12,239 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:16:27,151 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:16:39,204 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:16:47,218 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:16:59,232 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:17:11,268 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:17:25,587 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:17:37,602 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:17:45,620 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:18:04,764 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:18:16,833 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:18:28,213 WARN L286 SmtUtils]: Spent 11.38s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:18:36,227 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:18:48,802 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:18:56,811 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:19:06,852 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:19:14,863 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:19:25,998 WARN L286 SmtUtils]: Spent 11.14s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:19:38,132 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:19:47,823 WARN L286 SmtUtils]: Spent 9.69s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:19:53,846 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:20:01,965 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:20:08,128 WARN L286 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:20:17,448 WARN L286 SmtUtils]: Spent 9.32s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:20:34,647 WARN L286 SmtUtils]: Spent 8.45s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:20:42,656 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:20:48,028 WARN L286 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:20:53,938 WARN L286 SmtUtils]: Spent 5.91s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:21:01,949 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:21:13,967 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-08 17:21:17,993 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (* 16777215 |c_ULTIMATE.start_main_~_hf_hashv~0#1|)) (.cse8 (* (- 1) |c_ULTIMATE.start_main_~_hf_hashv~0#1|)) (.cse7 (* 4294967295 |c_ULTIMATE.start_main_~_hf_hashv~0#1|))) (or (exists ((v_z_21 Int)) (and (<= 0 v_z_21) (exists ((v_z_26 Int)) (and (exists ((v_y_26 Int)) (let ((.cse1 (* v_y_26 4294967296)) (.cse3 (* 16777217 v_z_26))) (let ((.cse0 (+ .cse1 .cse3))) (and (<= .cse0 16777215) (exists ((v_z_16 Int)) (and (= 16777216 (+ .cse1 (mod (+ 14384614 .cse2 (* v_z_21 16776960) (* 16711680 v_z_16)) 16777216) .cse3)) (exists ((v_y_24 Int)) (let ((.cse6 (* v_y_26 4294967040)) (.cse5 (div (+ .cse8 (* (- 281474976710655) v_z_26) 8553987558 (* v_z_16 (- 65536)) (* v_z_21 (- 256))) 16777216)) (.cse4 (mod (+ (* v_y_24 4278190080) .cse7 4276993779) 4294967296))) (and (= (+ (* v_y_24 16777216) 1099511627776 (* v_z_26 281474976710399) (* v_y_26 72057589742960640)) (* 256 .cse4)) (<= .cse5 (+ .cse6 v_y_24 255)) (<= (+ .cse6 v_y_24) .cse5) (<= 4294967296 (+ v_z_26 .cse4))))) (<= v_z_16 255) (<= 0 v_z_16))) (<= 0 .cse0))))) (<= 0 v_z_26) (<= v_z_26 4294967295))) (<= v_z_21 255))) (exists ((v_z_21 Int)) (and (<= 0 v_z_21) (<= v_z_21 255) (exists ((v_z_26 Int)) (and (<= 0 v_z_26) (<= v_z_26 4294967295) (exists ((v_y_26 Int)) (let ((.cse10 (* v_y_26 4294967296)) (.cse11 (* 16777217 v_z_26))) (let ((.cse9 (+ .cse10 .cse11))) (and (<= .cse9 16777215) (exists ((v_z_16 Int)) (and (= 16777216 (+ .cse10 (mod (+ 14384614 .cse2 (* v_z_21 16776960) (* 16711680 v_z_16)) 16777216) .cse11)) (exists ((v_y_24 Int)) (let ((.cse12 (mod (+ (* v_y_24 4278190080) .cse7 4276993779) 4294967296)) (.cse14 (* v_y_26 4294967040)) (.cse13 (div (+ .cse8 (* (- 281474976710655) v_z_26) 8553987558 (* v_z_16 (- 65536)) (* v_z_21 (- 256))) 16777216))) (and (<= (+ v_z_26 .cse12) 4294967295) (= (+ (* v_y_24 16777216) (* v_z_26 281474976710399) (* v_y_26 72057589742960640)) (* 256 .cse12)) (<= .cse13 (+ .cse14 v_y_24 255)) (<= (+ .cse14 v_y_24) .cse13)))) (<= v_z_16 255) (<= 0 v_z_16))) (<= 0 .cse9))))))))))) is different from false [2024-11-08 17:21:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 17:21:18,675 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:18,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562675989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:18,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:21:18,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2024-11-08 17:21:18,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602325776] [2024-11-08 17:21:18,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:18,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:21:18,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:18,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:21:18,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=201, Unknown=1, NotChecked=28, Total=272 [2024-11-08 17:21:18,680 INFO L87 Difference]: Start difference. First operand 408 states and 524 transitions. Second operand has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 13 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:19,940 INFO L93 Difference]: Finished difference Result 661 states and 869 transitions. [2024-11-08 17:21:19,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:21:19,941 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 13 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-08 17:21:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:19,945 INFO L225 Difference]: With dead ends: 661 [2024-11-08 17:21:19,945 INFO L226 Difference]: Without dead ends: 544 [2024-11-08 17:21:19,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=90, Invalid=419, Unknown=1, NotChecked=42, Total=552 [2024-11-08 17:21:19,948 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 356 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:19,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 2347 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 496 Invalid, 0 Unknown, 401 Unchecked, 0.8s Time] [2024-11-08 17:21:19,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-08 17:21:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 410. [2024-11-08 17:21:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 404 states have (on average 1.2846534653465347) internal successors, (519), 405 states have internal predecessors, (519), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 526 transitions. [2024-11-08 17:21:19,979 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 526 transitions. Word has length 171 [2024-11-08 17:21:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:19,980 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 526 transitions. [2024-11-08 17:21:19,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.461538461538462) internal successors, (162), 13 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 526 transitions. [2024-11-08 17:21:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-08 17:21:19,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:19,983 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:20,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:21:20,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:21:20,189 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:20,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1995321016, now seen corresponding path program 1 times [2024-11-08 17:21:20,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:20,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171030647] [2024-11-08 17:21:20,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:20,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:31,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-08 17:21:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:31,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-08 17:21:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:31,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:21:31,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:31,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171030647] [2024-11-08 17:21:31,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171030647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:31,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117914038] [2024-11-08 17:21:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:31,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:31,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:31,892 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:31,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:21:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:32,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:21:32,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:21:32,476 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:32,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117914038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:32,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:21:32,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 21 [2024-11-08 17:21:32,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356894874] [2024-11-08 17:21:32,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:32,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:21:32,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:32,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:21:32,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:21:32,480 INFO L87 Difference]: Start difference. First operand 410 states and 526 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:32,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:32,689 INFO L93 Difference]: Finished difference Result 775 states and 1004 transitions. [2024-11-08 17:21:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:21:32,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-08 17:21:32,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:32,692 INFO L225 Difference]: With dead ends: 775 [2024-11-08 17:21:32,693 INFO L226 Difference]: Without dead ends: 410 [2024-11-08 17:21:32,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:21:32,695 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 17 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:32,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 924 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:21:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-08 17:21:32,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2024-11-08 17:21:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 404 states have (on average 1.2797029702970297) internal successors, (517), 405 states have internal predecessors, (517), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 524 transitions. [2024-11-08 17:21:32,718 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 524 transitions. Word has length 173 [2024-11-08 17:21:32,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:32,718 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 524 transitions. [2024-11-08 17:21:32,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 524 transitions. [2024-11-08 17:21:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-08 17:21:32,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:32,721 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:32,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:21:32,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 17:21:32,927 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:32,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:32,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1286989139, now seen corresponding path program 1 times [2024-11-08 17:21:32,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:32,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911296210] [2024-11-08 17:21:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:32,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:33,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-08 17:21:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:33,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-08 17:21:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:21:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911296210] [2024-11-08 17:21:33,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911296210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:33,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:33,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:21:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913148138] [2024-11-08 17:21:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:33,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:21:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:21:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:21:33,578 INFO L87 Difference]: Start difference. First operand 410 states and 524 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:34,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:34,234 INFO L93 Difference]: Finished difference Result 778 states and 1006 transitions. [2024-11-08 17:21:34,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:21:34,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-11-08 17:21:34,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:34,237 INFO L225 Difference]: With dead ends: 778 [2024-11-08 17:21:34,238 INFO L226 Difference]: Without dead ends: 416 [2024-11-08 17:21:34,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:21:34,239 INFO L432 NwaCegarLoop]: 349 mSDtfsCounter, 11 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:34,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1493 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:21:34,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-08 17:21:34,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2024-11-08 17:21:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 410 states have (on average 1.275609756097561) internal successors, (523), 411 states have internal predecessors, (523), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 530 transitions. [2024-11-08 17:21:34,268 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 530 transitions. Word has length 174 [2024-11-08 17:21:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:34,268 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 530 transitions. [2024-11-08 17:21:34,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 530 transitions. [2024-11-08 17:21:34,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-08 17:21:34,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:34,272 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:34,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:21:34,273 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:34,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1753603919, now seen corresponding path program 1 times [2024-11-08 17:21:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:34,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310738173] [2024-11-08 17:21:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:34,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:34,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:21:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:34,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 17:21:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:21:34,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:34,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310738173] [2024-11-08 17:21:34,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310738173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:34,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:34,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 17:21:34,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561379709] [2024-11-08 17:21:34,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:34,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:21:34,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:34,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:21:34,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:21:34,879 INFO L87 Difference]: Start difference. First operand 416 states and 530 transitions. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:35,773 INFO L93 Difference]: Finished difference Result 784 states and 1010 transitions. [2024-11-08 17:21:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:21:35,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-08 17:21:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:35,776 INFO L225 Difference]: With dead ends: 784 [2024-11-08 17:21:35,777 INFO L226 Difference]: Without dead ends: 426 [2024-11-08 17:21:35,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:21:35,779 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 15 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:35,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2002 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 17:21:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-08 17:21:35,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 424. [2024-11-08 17:21:35,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 418 states have (on average 1.2751196172248804) internal successors, (533), 419 states have internal predecessors, (533), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 540 transitions. [2024-11-08 17:21:35,803 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 540 transitions. Word has length 175 [2024-11-08 17:21:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:35,804 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 540 transitions. [2024-11-08 17:21:35,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:35,804 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 540 transitions. [2024-11-08 17:21:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-08 17:21:35,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:35,807 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:35,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:21:35,808 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:35,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash -699065621, now seen corresponding path program 1 times [2024-11-08 17:21:35,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:35,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252251713] [2024-11-08 17:21:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:36,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-08 17:21:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:36,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 17:21:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:21:36,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252251713] [2024-11-08 17:21:36,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252251713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:36,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74332914] [2024-11-08 17:21:36,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:36,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:36,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:36,755 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:36,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:21:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:37,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 17:21:37,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:21:37,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:37,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74332914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:37,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:21:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-08 17:21:37,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687643403] [2024-11-08 17:21:37,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:37,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:21:37,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:37,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:21:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:21:37,878 INFO L87 Difference]: Start difference. First operand 424 states and 540 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:39,037 INFO L93 Difference]: Finished difference Result 796 states and 1025 transitions. [2024-11-08 17:21:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:21:39,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-08 17:21:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:39,041 INFO L225 Difference]: With dead ends: 796 [2024-11-08 17:21:39,041 INFO L226 Difference]: Without dead ends: 434 [2024-11-08 17:21:39,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:21:39,046 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 12 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:39,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1709 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:21:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-08 17:21:39,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 430. [2024-11-08 17:21:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 424 states have (on average 1.2712264150943395) internal successors, (539), 425 states have internal predecessors, (539), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 546 transitions. [2024-11-08 17:21:39,074 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 546 transitions. Word has length 175 [2024-11-08 17:21:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:39,074 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 546 transitions. [2024-11-08 17:21:39,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 546 transitions. [2024-11-08 17:21:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-08 17:21:39,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:39,078 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:39,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:21:39,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:21:39,279 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:39,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:39,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1477798311, now seen corresponding path program 1 times [2024-11-08 17:21:39,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:39,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999415298] [2024-11-08 17:21:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:39,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:39,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 17:21:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:39,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-08 17:21:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:21:39,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999415298] [2024-11-08 17:21:39,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999415298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:39,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:39,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 17:21:39,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580358420] [2024-11-08 17:21:39,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:39,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:21:39,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:21:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:21:39,961 INFO L87 Difference]: Start difference. First operand 430 states and 546 transitions. Second operand has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:40,598 INFO L93 Difference]: Finished difference Result 810 states and 1038 transitions. [2024-11-08 17:21:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:21:40,599 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2024-11-08 17:21:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:40,601 INFO L225 Difference]: With dead ends: 810 [2024-11-08 17:21:40,602 INFO L226 Difference]: Without dead ends: 450 [2024-11-08 17:21:40,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:21:40,603 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 23 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:40,604 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2105 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:21:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-08 17:21:40,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 444. [2024-11-08 17:21:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 438 states have (on average 1.2716894977168949) internal successors, (557), 439 states have internal predecessors, (557), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 564 transitions. [2024-11-08 17:21:40,627 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 564 transitions. Word has length 176 [2024-11-08 17:21:40,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:40,628 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 564 transitions. [2024-11-08 17:21:40,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 9 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:40,628 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 564 transitions. [2024-11-08 17:21:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-08 17:21:40,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:40,631 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:40,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 17:21:40,632 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:40,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash -72379653, now seen corresponding path program 1 times [2024-11-08 17:21:40,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:40,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485677454] [2024-11-08 17:21:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:40,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:41,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:21:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:41,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 17:21:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:21:41,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:41,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485677454] [2024-11-08 17:21:41,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485677454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:41,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:41,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-08 17:21:41,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090946474] [2024-11-08 17:21:41,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:41,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:21:41,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:21:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:21:41,440 INFO L87 Difference]: Start difference. First operand 444 states and 564 transitions. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 10 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:42,395 INFO L93 Difference]: Finished difference Result 834 states and 1071 transitions. [2024-11-08 17:21:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:21:42,396 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 10 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-11-08 17:21:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:42,398 INFO L225 Difference]: With dead ends: 834 [2024-11-08 17:21:42,398 INFO L226 Difference]: Without dead ends: 462 [2024-11-08 17:21:42,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:21:42,400 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 26 mSDsluCounter, 2558 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:42,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2904 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 17:21:42,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-08 17:21:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 450. [2024-11-08 17:21:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 444 states have (on average 1.268018018018018) internal successors, (563), 445 states have internal predecessors, (563), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 570 transitions. [2024-11-08 17:21:42,422 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 570 transitions. Word has length 177 [2024-11-08 17:21:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:42,423 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 570 transitions. [2024-11-08 17:21:42,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 10 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 570 transitions. [2024-11-08 17:21:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-08 17:21:42,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:42,426 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:42,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 17:21:42,426 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:42,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:42,427 INFO L85 PathProgramCache]: Analyzing trace with hash 875986711, now seen corresponding path program 1 times [2024-11-08 17:21:42,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:42,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215965416] [2024-11-08 17:21:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:42,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:49,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:21:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:49,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 17:21:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:21:49,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:49,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215965416] [2024-11-08 17:21:49,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215965416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:49,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834752142] [2024-11-08 17:21:49,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:49,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:49,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:49,608 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:49,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:21:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:50,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 17:21:50,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 17:21:50,448 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:50,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834752142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:50,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:21:50,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19] total 24 [2024-11-08 17:21:50,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79668323] [2024-11-08 17:21:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:50,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:21:50,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:21:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:21:50,451 INFO L87 Difference]: Start difference. First operand 450 states and 570 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:50,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:50,907 INFO L93 Difference]: Finished difference Result 834 states and 1066 transitions. [2024-11-08 17:21:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:21:50,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-11-08 17:21:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:50,913 INFO L225 Difference]: With dead ends: 834 [2024-11-08 17:21:50,913 INFO L226 Difference]: Without dead ends: 464 [2024-11-08 17:21:50,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:21:50,918 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 40 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:50,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1738 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:21:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-11-08 17:21:50,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 454. [2024-11-08 17:21:50,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 448 states have (on average 1.265625) internal successors, (567), 449 states have internal predecessors, (567), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 574 transitions. [2024-11-08 17:21:50,946 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 574 transitions. Word has length 177 [2024-11-08 17:21:50,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:50,947 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 574 transitions. [2024-11-08 17:21:50,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 574 transitions. [2024-11-08 17:21:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-08 17:21:50,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:50,951 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:50,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:21:51,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:51,152 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:51,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:51,153 INFO L85 PathProgramCache]: Analyzing trace with hash 931426288, now seen corresponding path program 1 times [2024-11-08 17:21:51,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:51,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317737174] [2024-11-08 17:21:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:51,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:21:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:51,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 17:21:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:21:51,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:51,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317737174] [2024-11-08 17:21:51,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317737174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:51,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024283446] [2024-11-08 17:21:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:51,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:51,948 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:51,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:21:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:53,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:21:53,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:53,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 17:21:53,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:53,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024283446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:53,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:21:53,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-08 17:21:53,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128947397] [2024-11-08 17:21:53,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:53,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:21:53,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:53,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:21:53,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:21:53,415 INFO L87 Difference]: Start difference. First operand 454 states and 574 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:54,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:54,362 INFO L93 Difference]: Finished difference Result 576 states and 736 transitions. [2024-11-08 17:21:54,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:21:54,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2024-11-08 17:21:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:54,365 INFO L225 Difference]: With dead ends: 576 [2024-11-08 17:21:54,366 INFO L226 Difference]: Without dead ends: 459 [2024-11-08 17:21:54,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:21:54,367 INFO L432 NwaCegarLoop]: 339 mSDtfsCounter, 12 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:54,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1714 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 17:21:54,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-08 17:21:54,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 458. [2024-11-08 17:21:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 452 states have (on average 1.2632743362831858) internal successors, (571), 453 states have internal predecessors, (571), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 578 transitions. [2024-11-08 17:21:54,393 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 578 transitions. Word has length 177 [2024-11-08 17:21:54,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:54,393 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 578 transitions. [2024-11-08 17:21:54,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 578 transitions. [2024-11-08 17:21:54,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-08 17:21:54,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:54,396 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:54,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:21:54,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:54,597 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:54,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:54,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2129432331, now seen corresponding path program 1 times [2024-11-08 17:21:54,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:54,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890357730] [2024-11-08 17:21:54,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:54,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:55,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:21:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:55,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 17:21:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:21:55,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890357730] [2024-11-08 17:21:55,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890357730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:55,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355990871] [2024-11-08 17:21:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:55,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:55,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:55,770 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:55,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:21:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:56,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 17:21:56,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:21:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 17:21:56,612 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:21:56,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355990871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:56,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:21:56,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-08 17:21:56,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213832470] [2024-11-08 17:21:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:56,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:21:56,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:56,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:21:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:21:56,615 INFO L87 Difference]: Start difference. First operand 458 states and 578 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:57,010 INFO L93 Difference]: Finished difference Result 588 states and 748 transitions. [2024-11-08 17:21:57,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:21:57,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 178 [2024-11-08 17:21:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:57,014 INFO L225 Difference]: With dead ends: 588 [2024-11-08 17:21:57,014 INFO L226 Difference]: Without dead ends: 467 [2024-11-08 17:21:57,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:21:57,015 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 41 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:57,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1732 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:21:57,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-08 17:21:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 460. [2024-11-08 17:21:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 454 states have (on average 1.2621145374449338) internal successors, (573), 455 states have internal predecessors, (573), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 580 transitions. [2024-11-08 17:21:57,048 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 580 transitions. Word has length 178 [2024-11-08 17:21:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:57,050 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 580 transitions. [2024-11-08 17:21:57,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 580 transitions. [2024-11-08 17:21:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-08 17:21:57,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:57,052 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:57,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 17:21:57,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:57,253 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:57,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:57,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1638398495, now seen corresponding path program 1 times [2024-11-08 17:21:57,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:57,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662044183] [2024-11-08 17:21:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:57,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:57,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:21:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:57,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 17:21:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 17:21:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662044183] [2024-11-08 17:21:57,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662044183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:21:57,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:21:57,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 17:21:57,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400425793] [2024-11-08 17:21:57,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:21:57,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:21:57,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:21:57,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:21:57,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:21:57,764 INFO L87 Difference]: Start difference. First operand 460 states and 580 transitions. Second operand has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 8 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:58,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:21:58,682 INFO L93 Difference]: Finished difference Result 599 states and 761 transitions. [2024-11-08 17:21:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:21:58,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 8 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 178 [2024-11-08 17:21:58,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:21:58,685 INFO L225 Difference]: With dead ends: 599 [2024-11-08 17:21:58,685 INFO L226 Difference]: Without dead ends: 476 [2024-11-08 17:21:58,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:21:58,687 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 21 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:21:58,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2272 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 17:21:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-08 17:21:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 460. [2024-11-08 17:21:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 454 states have (on average 1.2621145374449338) internal successors, (573), 455 states have internal predecessors, (573), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:21:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 580 transitions. [2024-11-08 17:21:58,709 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 580 transitions. Word has length 178 [2024-11-08 17:21:58,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:21:58,710 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 580 transitions. [2024-11-08 17:21:58,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.77777777777778) internal successors, (169), 8 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:21:58,711 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 580 transitions. [2024-11-08 17:21:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-08 17:21:58,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:21:58,712 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:21:58,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 17:21:58,713 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:21:58,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:21:58,714 INFO L85 PathProgramCache]: Analyzing trace with hash 6795428, now seen corresponding path program 1 times [2024-11-08 17:21:58,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:21:58,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718893624] [2024-11-08 17:21:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:58,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:21:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:59,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:21:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:59,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 17:21:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:21:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:21:59,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:21:59,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718893624] [2024-11-08 17:21:59,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718893624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:21:59,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307306183] [2024-11-08 17:21:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:21:59,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:21:59,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:21:59,335 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:21:59,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:22:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:00,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 17:22:00,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:00,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:22:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:22:01,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:22:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:22:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307306183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:22:01,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:22:01,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-11-08 17:22:01,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973770906] [2024-11-08 17:22:01,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:22:01,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 17:22:01,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:01,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 17:22:01,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:22:01,400 INFO L87 Difference]: Start difference. First operand 460 states and 580 transitions. Second operand has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 16 states have internal predecessors, (277), 4 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-08 17:22:02,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:02,503 INFO L93 Difference]: Finished difference Result 962 states and 1235 transitions. [2024-11-08 17:22:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 17:22:02,504 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 16 states have internal predecessors, (277), 4 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 179 [2024-11-08 17:22:02,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:02,508 INFO L225 Difference]: With dead ends: 962 [2024-11-08 17:22:02,508 INFO L226 Difference]: Without dead ends: 617 [2024-11-08 17:22:02,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:22:02,510 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 571 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:02,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 3313 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 17:22:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-08 17:22:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 488. [2024-11-08 17:22:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 479 states have (on average 1.269311064718163) internal successors, (608), 481 states have internal predecessors, (608), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:22:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 617 transitions. [2024-11-08 17:22:02,543 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 617 transitions. Word has length 179 [2024-11-08 17:22:02,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:02,545 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 617 transitions. [2024-11-08 17:22:02,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 16 states have internal predecessors, (277), 4 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-08 17:22:02,545 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 617 transitions. [2024-11-08 17:22:02,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-08 17:22:02,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:02,548 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:02,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 17:22:02,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:02,750 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:02,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:02,751 INFO L85 PathProgramCache]: Analyzing trace with hash -253866174, now seen corresponding path program 2 times [2024-11-08 17:22:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:22:02,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927743716] [2024-11-08 17:22:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:02,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:22:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:03,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:22:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:03,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:22:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:22:03,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:22:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927743716] [2024-11-08 17:22:03,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927743716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:03,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177237524] [2024-11-08 17:22:03,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:22:03,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:03,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:22:03,725 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:22:03,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:22:04,505 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:22:04,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:22:04,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:22:04,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:09,095 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_y_36 Int) (v_z_38 Int) (v_y_38 Int) (v_y_40 Int)) (and (= (+ 8607908109 (* 2 |c_ULTIMATE.start_main_~_hj_j~1#1|) (* 17179869184 v_y_36) (* v_y_40 12884901888) (* v_y_38 16384) (* v_z_38 4)) (* (mod (+ 2690382803 |c_ULTIMATE.start_main_~_hj_j~1#1| (* v_z_38 2) (* 8192 v_y_38)) 4294967296) 3)) (<= 0 (+ v_z_38 (* v_y_38 4096))) (<= v_z_38 4095) (<= v_y_38 0))) is different from true [2024-11-08 17:22:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 17:22:09,125 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:22:09,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177237524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:22:09,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:22:09,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2024-11-08 17:22:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544225952] [2024-11-08 17:22:09,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:22:09,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:22:09,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:09,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:22:09,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=239, Unknown=1, NotChecked=30, Total=306 [2024-11-08 17:22:09,127 INFO L87 Difference]: Start difference. First operand 488 states and 617 transitions. Second operand has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:22:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:09,980 INFO L93 Difference]: Finished difference Result 623 states and 793 transitions. [2024-11-08 17:22:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:22:09,981 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 183 [2024-11-08 17:22:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:09,984 INFO L225 Difference]: With dead ends: 623 [2024-11-08 17:22:09,984 INFO L226 Difference]: Without dead ends: 500 [2024-11-08 17:22:09,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=36, Invalid=239, Unknown=1, NotChecked=30, Total=306 [2024-11-08 17:22:09,985 INFO L432 NwaCegarLoop]: 331 mSDtfsCounter, 13 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:09,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2511 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 679 Invalid, 0 Unknown, 381 Unchecked, 0.8s Time] [2024-11-08 17:22:09,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-08 17:22:10,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 497. [2024-11-08 17:22:10,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 488 states have (on average 1.2684426229508197) internal successors, (619), 490 states have internal predecessors, (619), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:22:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 628 transitions. [2024-11-08 17:22:10,010 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 628 transitions. Word has length 183 [2024-11-08 17:22:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:10,010 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 628 transitions. [2024-11-08 17:22:10,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:22:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 628 transitions. [2024-11-08 17:22:10,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-08 17:22:10,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:10,013 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:10,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 17:22:10,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:10,214 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:10,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:10,214 INFO L85 PathProgramCache]: Analyzing trace with hash -385164343, now seen corresponding path program 1 times [2024-11-08 17:22:10,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:22:10,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304062407] [2024-11-08 17:22:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:10,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:22:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:10,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:22:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:10,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-08 17:22:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:22:10,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:22:10,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304062407] [2024-11-08 17:22:10,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304062407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:10,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961248537] [2024-11-08 17:22:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:10,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:10,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:22:10,976 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:22:10,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:22:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:11,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:22:11,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 17:22:11,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:22:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 26 refuted. 1 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:22:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961248537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:22:16,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:22:16,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-11-08 17:22:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519643075] [2024-11-08 17:22:16,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:22:16,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:22:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:16,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:22:16,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=309, Unknown=1, NotChecked=0, Total=420 [2024-11-08 17:22:16,235 INFO L87 Difference]: Start difference. First operand 497 states and 628 transitions. Second operand has 21 states, 21 states have (on average 9.476190476190476) internal successors, (199), 20 states have internal predecessors, (199), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:22:17,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:17,333 INFO L93 Difference]: Finished difference Result 897 states and 1142 transitions. [2024-11-08 17:22:17,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 17:22:17,334 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.476190476190476) internal successors, (199), 20 states have internal predecessors, (199), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 183 [2024-11-08 17:22:17,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:17,336 INFO L225 Difference]: With dead ends: 897 [2024-11-08 17:22:17,337 INFO L226 Difference]: Without dead ends: 517 [2024-11-08 17:22:17,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=287, Invalid=704, Unknown=1, NotChecked=0, Total=992 [2024-11-08 17:22:17,338 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 35 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:17,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3029 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:22:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-08 17:22:17,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 511. [2024-11-08 17:22:17,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 502 states have (on average 1.2669322709163346) internal successors, (636), 504 states have internal predecessors, (636), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:22:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 645 transitions. [2024-11-08 17:22:17,367 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 645 transitions. Word has length 183 [2024-11-08 17:22:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:17,368 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 645 transitions. [2024-11-08 17:22:17,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.476190476190476) internal successors, (199), 20 states have internal predecessors, (199), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:22:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 645 transitions. [2024-11-08 17:22:17,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-08 17:22:17,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:17,371 INFO L215 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:17,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 17:22:17,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 17:22:17,572 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:17,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:17,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2111417275, now seen corresponding path program 2 times [2024-11-08 17:22:17,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:22:17,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142781581] [2024-11-08 17:22:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:17,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:22:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:18,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:22:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:18,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-08 17:22:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 123 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 17:22:18,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:22:18,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142781581] [2024-11-08 17:22:18,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142781581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:18,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005115432] [2024-11-08 17:22:18,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:22:18,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:18,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:22:18,688 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:22:18,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:22:19,427 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:22:19,428 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:22:19,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 17:22:19,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-08 17:22:19,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:22:19,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005115432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:22:19,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:22:19,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2024-11-08 17:22:19,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110291579] [2024-11-08 17:22:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:22:19,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:22:19,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:22:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:22:19,793 INFO L87 Difference]: Start difference. First operand 511 states and 645 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:22:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:20,350 INFO L93 Difference]: Finished difference Result 648 states and 824 transitions. [2024-11-08 17:22:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:22:20,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 192 [2024-11-08 17:22:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:20,353 INFO L225 Difference]: With dead ends: 648 [2024-11-08 17:22:20,353 INFO L226 Difference]: Without dead ends: 516 [2024-11-08 17:22:20,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:22:20,354 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 10 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:20,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1721 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:22:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-08 17:22:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 511. [2024-11-08 17:22:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 502 states have (on average 1.2669322709163346) internal successors, (636), 504 states have internal predecessors, (636), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:22:20,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 645 transitions. [2024-11-08 17:22:20,387 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 645 transitions. Word has length 192 [2024-11-08 17:22:20,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:20,387 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 645 transitions. [2024-11-08 17:22:20,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:22:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 645 transitions. [2024-11-08 17:22:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-08 17:22:20,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:20,391 INFO L215 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:20,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 17:22:20,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:20,592 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:20,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash -939505649, now seen corresponding path program 1 times [2024-11-08 17:22:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:22:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191405396] [2024-11-08 17:22:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:20,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:22:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:21,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:22:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:21,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-08 17:22:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 123 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 17:22:21,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:22:21,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191405396] [2024-11-08 17:22:21,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191405396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:21,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249783296] [2024-11-08 17:22:21,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:21,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:21,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:22:21,802 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:22:21,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:22:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:22,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 17:22:22,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2024-11-08 17:22:23,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:22:23,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249783296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:22:23,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:22:23,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15] total 22 [2024-11-08 17:22:23,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047585832] [2024-11-08 17:22:23,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:22:23,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:22:23,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:22:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:22:23,211 INFO L87 Difference]: Start difference. First operand 511 states and 645 transitions. Second operand has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:22:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:23,766 INFO L93 Difference]: Finished difference Result 668 states and 851 transitions. [2024-11-08 17:22:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:22:23,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 193 [2024-11-08 17:22:23,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:23,770 INFO L225 Difference]: With dead ends: 668 [2024-11-08 17:22:23,770 INFO L226 Difference]: Without dead ends: 536 [2024-11-08 17:22:23,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:22:23,773 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 62 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:23,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2045 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:22:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-11-08 17:22:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 518. [2024-11-08 17:22:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 509 states have (on average 1.2671905697445973) internal successors, (645), 511 states have internal predecessors, (645), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:22:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 654 transitions. [2024-11-08 17:22:23,805 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 654 transitions. Word has length 193 [2024-11-08 17:22:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:23,806 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 654 transitions. [2024-11-08 17:22:23,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:22:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 654 transitions. [2024-11-08 17:22:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-08 17:22:23,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:23,808 INFO L215 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:23,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 17:22:24,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 17:22:24,010 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:24,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:24,010 INFO L85 PathProgramCache]: Analyzing trace with hash 942216440, now seen corresponding path program 1 times [2024-11-08 17:22:24,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:22:24,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547095224] [2024-11-08 17:22:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:24,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:22:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:24,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-08 17:22:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:25,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-08 17:22:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 123 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 17:22:25,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:22:25,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547095224] [2024-11-08 17:22:25,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547095224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:25,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390522805] [2024-11-08 17:22:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:25,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:25,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:22:25,467 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:22:25,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:22:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:26,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 17:22:26,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-08 17:22:26,893 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:22:26,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390522805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:22:26,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:22:26,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2024-11-08 17:22:26,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600452581] [2024-11-08 17:22:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:22:26,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:22:26,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:22:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:22:26,895 INFO L87 Difference]: Start difference. First operand 518 states and 654 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:22:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:27,440 INFO L93 Difference]: Finished difference Result 969 states and 1236 transitions. [2024-11-08 17:22:27,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:22:27,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 193 [2024-11-08 17:22:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:27,443 INFO L225 Difference]: With dead ends: 969 [2024-11-08 17:22:27,443 INFO L226 Difference]: Without dead ends: 528 [2024-11-08 17:22:27,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:22:27,445 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 10 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:27,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1721 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:22:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-08 17:22:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 518. [2024-11-08 17:22:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 509 states have (on average 1.2671905697445973) internal successors, (645), 511 states have internal predecessors, (645), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:22:27,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 654 transitions. [2024-11-08 17:22:27,475 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 654 transitions. Word has length 193 [2024-11-08 17:22:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:27,475 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 654 transitions. [2024-11-08 17:22:27,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:22:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 654 transitions. [2024-11-08 17:22:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-08 17:22:27,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:27,478 INFO L215 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:27,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 17:22:27,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:27,679 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:27,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash 704524612, now seen corresponding path program 1 times [2024-11-08 17:22:27,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:22:27,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535828904] [2024-11-08 17:22:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:27,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:22:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:28,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 17:22:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:28,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:22:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 123 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 17:22:28,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:22:28,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535828904] [2024-11-08 17:22:28,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535828904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:28,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30800929] [2024-11-08 17:22:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:28,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:28,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:22:28,881 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:22:28,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:22:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:29,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-08 17:22:29,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 38 proven. 90 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 17:22:30,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:22:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-08 17:22:30,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30800929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:22:30,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:22:30,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 9] total 32 [2024-11-08 17:22:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780766318] [2024-11-08 17:22:30,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:22:30,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 17:22:30,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:30,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 17:22:30,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2024-11-08 17:22:30,547 INFO L87 Difference]: Start difference. First operand 518 states and 654 transitions. Second operand has 32 states, 32 states have (on average 6.5625) internal successors, (210), 31 states have internal predecessors, (210), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:22:31,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:22:31,893 INFO L93 Difference]: Finished difference Result 948 states and 1216 transitions. [2024-11-08 17:22:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 17:22:31,894 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.5625) internal successors, (210), 31 states have internal predecessors, (210), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 194 [2024-11-08 17:22:31,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:22:31,897 INFO L225 Difference]: With dead ends: 948 [2024-11-08 17:22:31,898 INFO L226 Difference]: Without dead ends: 553 [2024-11-08 17:22:31,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=608, Invalid=1842, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 17:22:31,900 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 19 mSDsluCounter, 3151 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:22:31,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3507 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:22:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-08 17:22:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 532. [2024-11-08 17:22:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 523 states have (on average 1.2753346080305927) internal successors, (667), 525 states have internal predecessors, (667), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:22:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 676 transitions. [2024-11-08 17:22:31,941 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 676 transitions. Word has length 194 [2024-11-08 17:22:31,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:22:31,941 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 676 transitions. [2024-11-08 17:22:31,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.5625) internal successors, (210), 31 states have internal predecessors, (210), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:22:31,942 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 676 transitions. [2024-11-08 17:22:31,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-08 17:22:31,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:22:31,944 INFO L215 NwaCegarLoop]: trace histogram [28, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:22:31,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 17:22:32,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 17:22:32,145 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:22:32,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:22:32,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1323698118, now seen corresponding path program 2 times [2024-11-08 17:22:32,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:22:32,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560879224] [2024-11-08 17:22:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:22:32,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:22:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:49,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 17:22:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:49,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-08 17:22:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:22:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 382 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-08 17:22:50,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:22:50,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560879224] [2024-11-08 17:22:50,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560879224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:22:50,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081853705] [2024-11-08 17:22:50,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:22:50,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:22:50,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:22:50,463 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:22:50,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 17:22:52,391 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:22:52,391 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:22:52,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 17:22:52,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:22:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2024-11-08 17:22:58,071 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:22:58,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081853705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:22:58,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:22:58,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [35] total 45 [2024-11-08 17:22:58,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918728176] [2024-11-08 17:22:58,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:22:58,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:22:58,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:22:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:22:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1866, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 17:22:58,074 INFO L87 Difference]: Start difference. First operand 532 states and 676 transitions. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:23:00,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:02,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:06,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:10,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:14,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:18,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:22,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:26,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:30,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:34,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:38,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:42,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:46,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:50,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:54,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:23:58,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:24:03,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:24:07,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:24:11,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:24:13,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 17:24:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:24:14,462 INFO L93 Difference]: Finished difference Result 682 states and 875 transitions. [2024-11-08 17:24:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:24:14,463 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 207 [2024-11-08 17:24:14,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:24:14,466 INFO L225 Difference]: With dead ends: 682 [2024-11-08 17:24:14,466 INFO L226 Difference]: Without dead ends: 543 [2024-11-08 17:24:14,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=114, Invalid=1866, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 17:24:14,467 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 18 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 1 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:24:14,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3105 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 875 Invalid, 17 Unknown, 0 Unchecked, 76.3s Time] [2024-11-08 17:24:14,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-08 17:24:14,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 534. [2024-11-08 17:24:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 525 states have (on average 1.2742857142857142) internal successors, (669), 527 states have internal predecessors, (669), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:24:14,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 678 transitions. [2024-11-08 17:24:14,503 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 678 transitions. Word has length 207 [2024-11-08 17:24:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:24:14,504 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 678 transitions. [2024-11-08 17:24:14,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:24:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 678 transitions. [2024-11-08 17:24:14,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-08 17:24:14,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:24:14,506 INFO L215 NwaCegarLoop]: trace histogram [28, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:14,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 17:24:14,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:14,707 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:24:14,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:14,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1071952567, now seen corresponding path program 1 times [2024-11-08 17:24:14,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:14,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378197060] [2024-11-08 17:24:14,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:14,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:15,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 17:24:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:16,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-08 17:24:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 284 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 17:24:16,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:16,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378197060] [2024-11-08 17:24:16,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378197060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650714489] [2024-11-08 17:24:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:16,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:16,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:16,301 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:16,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 17:24:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:18,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-08 17:24:18,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 221 proven. 66 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-08 17:24:19,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:26:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 2 proven. 259 refuted. 25 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 17:26:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650714489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:26:00,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:26:00,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 41 [2024-11-08 17:26:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250883930] [2024-11-08 17:26:00,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:26:00,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 17:26:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:26:00,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 17:26:00,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1200, Unknown=25, NotChecked=0, Total=1640 [2024-11-08 17:26:00,689 INFO L87 Difference]: Start difference. First operand 534 states and 678 transitions. Second operand has 41 states, 41 states have (on average 5.365853658536586) internal successors, (220), 40 states have internal predecessors, (220), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:26:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:26:28,447 INFO L93 Difference]: Finished difference Result 971 states and 1247 transitions. [2024-11-08 17:26:28,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-08 17:26:28,448 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.365853658536586) internal successors, (220), 40 states have internal predecessors, (220), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 207 [2024-11-08 17:26:28,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:26:28,452 INFO L225 Difference]: With dead ends: 971 [2024-11-08 17:26:28,452 INFO L226 Difference]: Without dead ends: 561 [2024-11-08 17:26:28,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 127.9s TimeCoverageRelationStatistics Valid=1257, Invalid=3008, Unknown=25, NotChecked=0, Total=4290 [2024-11-08 17:26:28,456 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 18 mSDsluCounter, 4575 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4932 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:26:28,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4932 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 17:26:28,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-08 17:26:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 553. [2024-11-08 17:26:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 544 states have (on average 1.2720588235294117) internal successors, (692), 546 states have internal predecessors, (692), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:26:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 701 transitions. [2024-11-08 17:26:28,511 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 701 transitions. Word has length 207 [2024-11-08 17:26:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:26:28,512 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 701 transitions. [2024-11-08 17:26:28,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.365853658536586) internal successors, (220), 40 states have internal predecessors, (220), 2 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:26:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 701 transitions. [2024-11-08 17:26:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-08 17:26:28,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:26:28,515 INFO L215 NwaCegarLoop]: trace histogram [41, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:26:28,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 17:26:28,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:26:28,716 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:26:28,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:26:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash 444806023, now seen corresponding path program 2 times [2024-11-08 17:26:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:26:28,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564851549] [2024-11-08 17:26:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:26:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:26:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:30,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 17:26:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:32,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:26:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 2 proven. 752 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 17:26:32,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:26:32,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564851549] [2024-11-08 17:26:32,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564851549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:26:32,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909569005] [2024-11-08 17:26:32,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:26:32,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:26:32,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:26:32,593 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:26:32,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 17:26:33,702 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:26:33,702 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:26:33,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 17:26:33,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:26:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2024-11-08 17:26:34,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:26:34,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909569005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:26:34,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:26:34,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [29] total 37 [2024-11-08 17:26:34,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660028710] [2024-11-08 17:26:34,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:26:34,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:26:34,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:26:34,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:26:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1237, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 17:26:34,923 INFO L87 Difference]: Start difference. First operand 553 states and 701 transitions. Second operand has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:26:35,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:26:35,959 INFO L93 Difference]: Finished difference Result 709 states and 905 transitions. [2024-11-08 17:26:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:26:35,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 220 [2024-11-08 17:26:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:26:35,963 INFO L225 Difference]: With dead ends: 709 [2024-11-08 17:26:35,963 INFO L226 Difference]: Without dead ends: 568 [2024-11-08 17:26:35,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=95, Invalid=1237, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 17:26:35,965 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 19 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:26:35,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2328 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:26:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-08 17:26:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 565. [2024-11-08 17:26:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 556 states have (on average 1.2715827338129497) internal successors, (707), 558 states have internal predecessors, (707), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:26:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 716 transitions. [2024-11-08 17:26:36,018 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 716 transitions. Word has length 220 [2024-11-08 17:26:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:26:36,018 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 716 transitions. [2024-11-08 17:26:36,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:26:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 716 transitions. [2024-11-08 17:26:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-08 17:26:36,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:26:36,022 INFO L215 NwaCegarLoop]: trace histogram [41, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:26:36,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 17:26:36,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-08 17:26:36,223 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:26:36,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:26:36,223 INFO L85 PathProgramCache]: Analyzing trace with hash 598501936, now seen corresponding path program 1 times [2024-11-08 17:26:36,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:26:36,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317176076] [2024-11-08 17:26:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:26:36,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:26:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:38,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 17:26:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:40,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-08 17:26:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 2 proven. 752 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-08 17:26:40,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:26:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317176076] [2024-11-08 17:26:40,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317176076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:26:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628760102] [2024-11-08 17:26:40,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:26:40,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:26:40,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:26:40,359 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:26:40,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 17:26:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:43,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-08 17:26:43,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:26:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 146 proven. 738 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 17:26:46,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:26:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 454 proven. 153 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-08 17:26:49,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628760102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:26:49,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:26:49,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 37, 21] total 82 [2024-11-08 17:26:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945321543] [2024-11-08 17:26:49,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:26:49,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-08 17:26:49,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:26:49,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-08 17:26:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1350, Invalid=5292, Unknown=0, NotChecked=0, Total=6642 [2024-11-08 17:26:49,233 INFO L87 Difference]: Start difference. First operand 565 states and 716 transitions. Second operand has 82 states, 82 states have (on average 3.1707317073170733) internal successors, (260), 81 states have internal predecessors, (260), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:27:36,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:27:36,079 INFO L93 Difference]: Finished difference Result 1061 states and 1393 transitions. [2024-11-08 17:27:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-08 17:27:36,080 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 3.1707317073170733) internal successors, (260), 81 states have internal predecessors, (260), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 220 [2024-11-08 17:27:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:27:36,082 INFO L225 Difference]: With dead ends: 1061 [2024-11-08 17:27:36,082 INFO L226 Difference]: Without dead ends: 639 [2024-11-08 17:27:36,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3701 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=3862, Invalid=11888, Unknown=0, NotChecked=0, Total=15750 [2024-11-08 17:27:36,085 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 32 mSDsluCounter, 7098 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7455 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:27:36,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7455 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 17:27:36,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2024-11-08 17:27:36,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 592. [2024-11-08 17:27:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 583 states have (on average 1.3036020583190395) internal successors, (760), 585 states have internal predecessors, (760), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:27:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 769 transitions. [2024-11-08 17:27:36,137 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 769 transitions. Word has length 220 [2024-11-08 17:27:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:27:36,137 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 769 transitions. [2024-11-08 17:27:36,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 3.1707317073170733) internal successors, (260), 81 states have internal predecessors, (260), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 17:27:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 769 transitions. [2024-11-08 17:27:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-08 17:27:36,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:27:36,140 INFO L215 NwaCegarLoop]: trace histogram [68, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:27:36,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-08 17:27:36,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-08 17:27:36,343 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:27:36,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:27:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2139866674, now seen corresponding path program 2 times [2024-11-08 17:27:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:27:36,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616856813] [2024-11-08 17:27:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:27:36,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:27:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:27:38,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 17:27:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:27:40,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-08 17:27:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:27:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 2 proven. 1471 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2024-11-08 17:27:40,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:27:40,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616856813] [2024-11-08 17:27:40,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616856813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:27:40,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101032182] [2024-11-08 17:27:40,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:27:40,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:27:40,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:27:40,937 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:27:40,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 17:27:43,786 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-08 17:27:43,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:27:43,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-08 17:27:43,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:27:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2024-11-08 17:27:45,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:27:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101032182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:27:45,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:27:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [30] total 39 [2024-11-08 17:27:45,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994911184] [2024-11-08 17:27:45,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:27:45,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:27:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:27:45,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:27:45,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1382, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 17:27:45,680 INFO L87 Difference]: Start difference. First operand 592 states and 769 transitions. Second operand has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:27:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:27:47,749 INFO L93 Difference]: Finished difference Result 761 states and 991 transitions. [2024-11-08 17:27:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:27:47,750 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 247 [2024-11-08 17:27:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:27:47,753 INFO L225 Difference]: With dead ends: 761 [2024-11-08 17:27:47,753 INFO L226 Difference]: Without dead ends: 608 [2024-11-08 17:27:47,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=100, Invalid=1382, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 17:27:47,754 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 23 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:27:47,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2874 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 17:27:47,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-08 17:27:47,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 602. [2024-11-08 17:27:47,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 593 states have (on average 1.3035413153456998) internal successors, (773), 595 states have internal predecessors, (773), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-08 17:27:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 782 transitions. [2024-11-08 17:27:47,863 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 782 transitions. Word has length 247 [2024-11-08 17:27:47,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:27:47,864 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 782 transitions. [2024-11-08 17:27:47,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 states have internal predecessors, (172), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:27:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 782 transitions. [2024-11-08 17:27:47,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-08 17:27:47,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:27:47,867 INFO L215 NwaCegarLoop]: trace histogram [68, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:27:47,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 17:27:48,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-08 17:27:48,072 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 17:27:48,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:27:48,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1968920795, now seen corresponding path program 1 times [2024-11-08 17:27:48,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:27:48,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805984625] [2024-11-08 17:27:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:27:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:27:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:27:51,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 17:27:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:27:53,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-08 17:27:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:27:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 2 proven. 1471 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2024-11-08 17:27:53,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:27:53,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805984625] [2024-11-08 17:27:53,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805984625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:27:53,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917278620] [2024-11-08 17:27:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:27:53,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:27:53,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:27:53,183 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:27:53,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8abb5121-e7fd-47b9-ba18-3a0841b4da86/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 17:28:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:04,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 408 conjuncts are in the unsatisfiable core [2024-11-08 17:28:04,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:28:04,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:28:04,396 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-08 17:28:04,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-08 17:28:04,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:28:04,418 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 15 treesize of output 1 [2024-11-08 17:28:04,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-08 17:28:04,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 17:28:05,767 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-08 17:28:05,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-08 17:28:05,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-08 17:28:18,582 INFO L224 Elim1Store]: Index analysis took 1718 ms