./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstpncpy-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/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_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstpncpy-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36c3a12d89778d96e6058a4f11ff4e1483403bd2fab9b14de640491057c7f753 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:12:24,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:12:24,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 16:12:24,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:12:24,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:12:24,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:12:24,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:12:24,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:12:24,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:12:24,324 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:12:24,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:12:24,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:12:24,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:12:24,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:12:24,327 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:12:24,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:12:24,328 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:12:24,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:12:24,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:12:24,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:12:24,330 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 16:12:24,334 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 16:12:24,335 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 16:12:24,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:12:24,335 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:12:24,336 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:12:24,336 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:12:24,336 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:12:24,337 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:12:24,337 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:12:24,337 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:12:24,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:12:24,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:12:24,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:12:24,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:12:24,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:12:24,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:12:24,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:12:24,344 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:12:24,344 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:12:24,345 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:12:24,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:12:24,349 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_4924665c-4de9-491f-afaf-4c5df8622425/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36c3a12d89778d96e6058a4f11ff4e1483403bd2fab9b14de640491057c7f753 [2024-11-08 16:12:24,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:12:24,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:12:24,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:12:24,730 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:12:24,731 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:12:24,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-memsafety/openbsd_cstpncpy-alloca-1.i Unable to find full path for "g++" [2024-11-08 16:12:27,102 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:12:27,385 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:12:27,385 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/sv-benchmarks/c/array-memsafety/openbsd_cstpncpy-alloca-1.i [2024-11-08 16:12:27,405 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/data/928d68dfd/8e4093912cf04168865ba29f90207518/FLAGf264013a0 [2024-11-08 16:12:27,422 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/data/928d68dfd/8e4093912cf04168865ba29f90207518 [2024-11-08 16:12:27,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:12:27,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:12:27,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:12:27,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:12:27,437 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:12:27,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:12:27" (1/1) ... [2024-11-08 16:12:27,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35673e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:27, skipping insertion in model container [2024-11-08 16:12:27,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:12:27" (1/1) ... [2024-11-08 16:12:27,488 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:12:27,951 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 16:12:27,954 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 16:12:27,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:12:27,979 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:12:28,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:12:28,118 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:12:28,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28 WrapperNode [2024-11-08 16:12:28,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:12:28,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:12:28,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:12:28,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:12:28,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,183 INFO L138 Inliner]: procedures = 117, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2024-11-08 16:12:28,187 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:12:28,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:12:28,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:12:28,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:12:28,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,212 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,232 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [3, 2]. 60 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2024-11-08 16:12:28,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,245 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,247 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:12:28,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:12:28,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:12:28,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:12:28,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (1/1) ... [2024-11-08 16:12:28,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:12:28,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:28,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:12:28,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:12:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:12:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:12:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:12:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:12:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:12:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:12:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:12:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:12:28,471 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:12:28,474 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:12:28,748 INFO L? ?]: Removed 50 outVars from TransFormulas that were not future-live. [2024-11-08 16:12:28,749 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:12:28,770 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:12:28,770 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 16:12:28,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:12:28 BoogieIcfgContainer [2024-11-08 16:12:28,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:12:28,776 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:12:28,776 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:12:28,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:12:28,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:12:27" (1/3) ... [2024-11-08 16:12:28,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e44ed46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:12:28, skipping insertion in model container [2024-11-08 16:12:28,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:12:28" (2/3) ... [2024-11-08 16:12:28,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e44ed46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:12:28, skipping insertion in model container [2024-11-08 16:12:28,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:12:28" (3/3) ... [2024-11-08 16:12:28,786 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstpncpy-alloca-1.i [2024-11-08 16:12:28,807 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:12:28,807 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-11-08 16:12:28,858 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:12:28,866 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=None, 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;@44e1c3fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:12:28,866 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-08 16:12:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 37 states have internal predecessors, (47), 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 16:12:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 16:12:28,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:28,879 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:28,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:28,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:28,886 INFO L85 PathProgramCache]: Analyzing trace with hash 121323279, now seen corresponding path program 1 times [2024-11-08 16:12:28,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:28,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508252258] [2024-11-08 16:12:28,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:28,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:29,267 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 16:12:29,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:29,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508252258] [2024-11-08 16:12:29,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508252258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:29,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:29,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:12:29,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189002650] [2024-11-08 16:12:29,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:29,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:12:29,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:29,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:12:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:12:29,327 INFO L87 Difference]: Start difference. First operand has 38 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 37 states have internal predecessors, (47), 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 16:12:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:29,443 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-08 16:12:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:12:29,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2024-11-08 16:12:29,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:29,456 INFO L225 Difference]: With dead ends: 44 [2024-11-08 16:12:29,457 INFO L226 Difference]: Without dead ends: 42 [2024-11-08 16:12:29,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:12:29,466 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:29,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 105 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-08 16:12:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2024-11-08 16:12:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 38 states have internal predecessors, (47), 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 16:12:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2024-11-08 16:12:29,511 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 8 [2024-11-08 16:12:29,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:29,512 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2024-11-08 16:12:29,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 16:12:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2024-11-08 16:12:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 16:12:29,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:29,514 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:29,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:12:29,515 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:29,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash 121334106, now seen corresponding path program 1 times [2024-11-08 16:12:29,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:29,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89597729] [2024-11-08 16:12:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:29,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:29,730 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 16:12:29,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:29,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89597729] [2024-11-08 16:12:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89597729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:29,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:29,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:12:29,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037670209] [2024-11-08 16:12:29,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:29,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:12:29,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:29,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:12:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:12:29,735 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:12:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:29,784 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2024-11-08 16:12:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:12:29,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-08 16:12:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:29,787 INFO L225 Difference]: With dead ends: 37 [2024-11-08 16:12:29,787 INFO L226 Difference]: Without dead ends: 37 [2024-11-08 16:12:29,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:12:29,789 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:29,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 55 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-08 16:12:29,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-08 16:12:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 36 states have internal predecessors, (45), 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 16:12:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-11-08 16:12:29,799 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 8 [2024-11-08 16:12:29,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:29,799 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-11-08 16:12:29,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:12:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-11-08 16:12:29,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 16:12:29,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:29,800 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:29,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:12:29,801 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:29,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:29,806 INFO L85 PathProgramCache]: Analyzing trace with hash 121334107, now seen corresponding path program 1 times [2024-11-08 16:12:29,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:29,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951465070] [2024-11-08 16:12:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:29,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:30,188 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 16:12:30,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:30,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951465070] [2024-11-08 16:12:30,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951465070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:30,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:30,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:12:30,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572688769] [2024-11-08 16:12:30,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:30,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:12:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:12:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:12:30,193 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 16:12:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:30,300 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2024-11-08 16:12:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:12:30,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2024-11-08 16:12:30,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:30,303 INFO L225 Difference]: With dead ends: 39 [2024-11-08 16:12:30,304 INFO L226 Difference]: Without dead ends: 39 [2024-11-08 16:12:30,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:12:30,305 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:30,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 91 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:30,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-08 16:12:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-08 16:12:30,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 38 states have internal predecessors, (47), 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 16:12:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2024-11-08 16:12:30,317 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 8 [2024-11-08 16:12:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:30,318 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2024-11-08 16:12:30,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 16:12:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2024-11-08 16:12:30,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 16:12:30,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:30,322 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:30,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:12:30,323 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:30,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:30,324 INFO L85 PathProgramCache]: Analyzing trace with hash 178581582, now seen corresponding path program 1 times [2024-11-08 16:12:30,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:30,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132284404] [2024-11-08 16:12:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:30,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:30,630 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 16:12:30,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:30,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132284404] [2024-11-08 16:12:30,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132284404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:30,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:30,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:30,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537367127] [2024-11-08 16:12:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:30,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:12:30,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:30,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:12:30,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:12:30,633 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 16:12:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:30,719 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2024-11-08 16:12:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:30,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2024-11-08 16:12:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:30,721 INFO L225 Difference]: With dead ends: 43 [2024-11-08 16:12:30,721 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 16:12:30,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:12:30,723 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:30,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 79 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:30,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 16:12:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-08 16:12:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 41 states have internal predecessors, (51), 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 16:12:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2024-11-08 16:12:30,728 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 8 [2024-11-08 16:12:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:30,729 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2024-11-08 16:12:30,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 16:12:30,729 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2024-11-08 16:12:30,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 16:12:30,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:30,730 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:30,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:12:30,730 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:30,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:30,731 INFO L85 PathProgramCache]: Analyzing trace with hash 178592409, now seen corresponding path program 1 times [2024-11-08 16:12:30,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:30,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287222633] [2024-11-08 16:12:30,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:30,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:30,934 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 16:12:30,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:30,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287222633] [2024-11-08 16:12:30,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287222633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:30,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:30,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:12:30,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268677241] [2024-11-08 16:12:30,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:30,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:30,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:30,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:30,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:30,939 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 16:12:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:30,972 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-11-08 16:12:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:30,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2024-11-08 16:12:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:30,975 INFO L225 Difference]: With dead ends: 41 [2024-11-08 16:12:30,975 INFO L226 Difference]: Without dead ends: 41 [2024-11-08 16:12:30,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:30,977 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:30,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 82 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:30,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-08 16:12:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2024-11-08 16:12:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 38 states have internal predecessors, (48), 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 16:12:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2024-11-08 16:12:30,982 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 8 [2024-11-08 16:12:30,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:30,982 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2024-11-08 16:12:30,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 16:12:30,983 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2024-11-08 16:12:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 16:12:30,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:30,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:30,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:12:30,984 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:30,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:30,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1101657602, now seen corresponding path program 1 times [2024-11-08 16:12:30,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:30,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133875500] [2024-11-08 16:12:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:30,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:31,115 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 16:12:31,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133875500] [2024-11-08 16:12:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133875500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:31,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:31,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:31,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723832516] [2024-11-08 16:12:31,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:31,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:12:31,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:31,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:12:31,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:12:31,120 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 16:12:31,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:31,233 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2024-11-08 16:12:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:12:31,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2024-11-08 16:12:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:31,240 INFO L225 Difference]: With dead ends: 40 [2024-11-08 16:12:31,240 INFO L226 Difference]: Without dead ends: 40 [2024-11-08 16:12:31,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:12:31,242 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:31,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 95 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-08 16:12:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-11-08 16:12:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 37 states have internal predecessors, (47), 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 16:12:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2024-11-08 16:12:31,260 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 12 [2024-11-08 16:12:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:31,260 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2024-11-08 16:12:31,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 16:12:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2024-11-08 16:12:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 16:12:31,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:31,262 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:31,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:12:31,263 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:31,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1101657601, now seen corresponding path program 1 times [2024-11-08 16:12:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93259242] [2024-11-08 16:12:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:31,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:31,584 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 16:12:31,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:31,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93259242] [2024-11-08 16:12:31,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93259242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:31,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:31,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:12:31,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280669675] [2024-11-08 16:12:31,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:31,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:12:31,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:31,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:12:31,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:12:31,588 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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 16:12:31,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:31,769 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-08 16:12:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:12:31,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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 12 [2024-11-08 16:12:31,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:31,771 INFO L225 Difference]: With dead ends: 44 [2024-11-08 16:12:31,771 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 16:12:31,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:12:31,773 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:31,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 132 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:12:31,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 16:12:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2024-11-08 16:12:31,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 39 states have internal predecessors, (49), 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 16:12:31,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2024-11-08 16:12:31,778 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 12 [2024-11-08 16:12:31,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:31,779 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2024-11-08 16:12:31,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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 16:12:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2024-11-08 16:12:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 16:12:31,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:31,780 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:31,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:12:31,781 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:31,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:31,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1390997254, now seen corresponding path program 1 times [2024-11-08 16:12:31,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:31,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784776062] [2024-11-08 16:12:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:31,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:32,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784776062] [2024-11-08 16:12:32,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784776062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569431662] [2024-11-08 16:12:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:32,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:32,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:32,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:32,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:12:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:32,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 16:12:32,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:32,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 7 [2024-11-08 16:12:32,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-08 16:12:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:32,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:33,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569431662] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:33,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:33,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-11-08 16:12:33,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840740838] [2024-11-08 16:12:33,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:33,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 16:12:33,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:33,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 16:12:33,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2024-11-08 16:12:33,194 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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 16:12:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:33,460 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-11-08 16:12:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:12:33,462 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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 12 [2024-11-08 16:12:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:33,462 INFO L225 Difference]: With dead ends: 41 [2024-11-08 16:12:33,462 INFO L226 Difference]: Without dead ends: 41 [2024-11-08 16:12:33,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2024-11-08 16:12:33,464 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:33,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 128 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-08 16:12:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2024-11-08 16:12:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 35 states have internal predecessors, (43), 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 16:12:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-11-08 16:12:33,469 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 12 [2024-11-08 16:12:33,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:33,469 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-11-08 16:12:33,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 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 16:12:33,470 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-11-08 16:12:33,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 16:12:33,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:33,470 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:33,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:12:33,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 16:12:33,671 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:33,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash 209612911, now seen corresponding path program 1 times [2024-11-08 16:12:33,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:33,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171402582] [2024-11-08 16:12:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:33,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:33,748 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 16:12:33,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171402582] [2024-11-08 16:12:33,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171402582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:33,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:33,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:12:33,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489425211] [2024-11-08 16:12:33,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:33,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:12:33,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:33,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:12:33,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:12:33,752 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 16:12:33,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:33,782 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2024-11-08 16:12:33,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:12:33,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-11-08 16:12:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:33,784 INFO L225 Difference]: With dead ends: 54 [2024-11-08 16:12:33,784 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 16:12:33,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 16:12:33,785 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:33,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 91 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:33,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 16:12:33,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2024-11-08 16:12:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 46 states have internal predecessors, (55), 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 16:12:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-11-08 16:12:33,791 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2024-11-08 16:12:33,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:33,791 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-11-08 16:12:33,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 16:12:33,792 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-11-08 16:12:33,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 16:12:33,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:33,793 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:33,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:12:33,793 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:33,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:33,794 INFO L85 PathProgramCache]: Analyzing trace with hash 208352723, now seen corresponding path program 1 times [2024-11-08 16:12:33,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:33,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880683217] [2024-11-08 16:12:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:33,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:34,004 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 16:12:34,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:34,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880683217] [2024-11-08 16:12:34,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880683217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:34,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:34,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:12:34,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602777774] [2024-11-08 16:12:34,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:34,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:12:34,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:34,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:12:34,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:12:34,007 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 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 16:12:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:34,095 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2024-11-08 16:12:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:12:34,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2024-11-08 16:12:34,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:34,097 INFO L225 Difference]: With dead ends: 46 [2024-11-08 16:12:34,097 INFO L226 Difference]: Without dead ends: 46 [2024-11-08 16:12:34,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:12:34,098 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 40 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:34,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 71 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:34,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-08 16:12:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-08 16:12:34,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 45 states have internal predecessors, (54), 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 16:12:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-11-08 16:12:34,108 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 13 [2024-11-08 16:12:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:34,109 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-11-08 16:12:34,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 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 16:12:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-11-08 16:12:34,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 16:12:34,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:34,114 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:34,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:12:34,114 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:34,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:34,115 INFO L85 PathProgramCache]: Analyzing trace with hash 208352724, now seen corresponding path program 1 times [2024-11-08 16:12:34,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:34,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945622604] [2024-11-08 16:12:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:34,359 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 16:12:34,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:34,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945622604] [2024-11-08 16:12:34,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945622604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:34,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:34,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:12:34,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251490631] [2024-11-08 16:12:34,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:34,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:12:34,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:34,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:12:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:12:34,361 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 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 16:12:34,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:34,434 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-11-08 16:12:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 16:12:34,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2024-11-08 16:12:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:34,435 INFO L225 Difference]: With dead ends: 49 [2024-11-08 16:12:34,435 INFO L226 Difference]: Without dead ends: 49 [2024-11-08 16:12:34,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:12:34,436 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:34,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 117 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:34,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-08 16:12:34,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-08 16:12:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 48 states have internal predecessors, (57), 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 16:12:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-11-08 16:12:34,440 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 13 [2024-11-08 16:12:34,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:34,441 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-11-08 16:12:34,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 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 16:12:34,441 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-11-08 16:12:34,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 16:12:34,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:34,442 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:34,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:12:34,442 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:34,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash -183414099, now seen corresponding path program 1 times [2024-11-08 16:12:34,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:34,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212252998] [2024-11-08 16:12:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:34,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:34,521 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 16:12:34,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:34,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212252998] [2024-11-08 16:12:34,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212252998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:34,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:34,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133406001] [2024-11-08 16:12:34,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:34,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:34,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:34,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:34,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:34,524 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 16:12:34,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:34,546 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-11-08 16:12:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:34,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2024-11-08 16:12:34,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:34,548 INFO L225 Difference]: With dead ends: 53 [2024-11-08 16:12:34,548 INFO L226 Difference]: Without dead ends: 53 [2024-11-08 16:12:34,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:34,549 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 15 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:34,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 75 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:34,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-08 16:12:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2024-11-08 16:12:34,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 48 states have internal predecessors, (56), 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 16:12:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-11-08 16:12:34,553 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 13 [2024-11-08 16:12:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:34,553 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-11-08 16:12:34,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 16:12:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-11-08 16:12:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 16:12:34,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:34,554 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:34,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:12:34,555 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:34,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:34,555 INFO L85 PathProgramCache]: Analyzing trace with hash -184674286, now seen corresponding path program 1 times [2024-11-08 16:12:34,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:34,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27850528] [2024-11-08 16:12:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:34,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:34,851 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 16:12:34,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:34,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27850528] [2024-11-08 16:12:34,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27850528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:34,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:34,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:12:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670291751] [2024-11-08 16:12:34,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:34,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 16:12:34,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 16:12:34,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:12:34,853 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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 16:12:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:34,943 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2024-11-08 16:12:34,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:12:34,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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 13 [2024-11-08 16:12:34,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:34,944 INFO L225 Difference]: With dead ends: 50 [2024-11-08 16:12:34,944 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 16:12:34,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:12:34,945 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:34,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 112 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:34,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 16:12:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2024-11-08 16:12:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 35 states have internal predecessors, (42), 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 16:12:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-08 16:12:34,952 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 13 [2024-11-08 16:12:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:34,952 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-08 16:12:34,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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 16:12:34,953 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-08 16:12:34,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 16:12:34,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:34,953 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:34,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:12:34,953 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:34,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash -714049031, now seen corresponding path program 1 times [2024-11-08 16:12:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645108666] [2024-11-08 16:12:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:35,126 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 16:12:35,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:35,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645108666] [2024-11-08 16:12:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645108666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:35,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:35,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:35,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690002084] [2024-11-08 16:12:35,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:35,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:35,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:35,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:35,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:35,128 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 16:12:35,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:35,162 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-11-08 16:12:35,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:35,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2024-11-08 16:12:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:35,163 INFO L225 Difference]: With dead ends: 53 [2024-11-08 16:12:35,163 INFO L226 Difference]: Without dead ends: 53 [2024-11-08 16:12:35,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:35,164 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:35,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 110 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:35,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-08 16:12:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-08 16:12:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-11-08 16:12:35,171 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 17 [2024-11-08 16:12:35,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:35,171 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-11-08 16:12:35,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 16:12:35,172 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-11-08 16:12:35,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 16:12:35,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:35,173 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:35,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:12:35,173 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:35,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:35,175 INFO L85 PathProgramCache]: Analyzing trace with hash -713525862, now seen corresponding path program 1 times [2024-11-08 16:12:35,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:35,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53596241] [2024-11-08 16:12:35,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:35,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:35,325 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 16:12:35,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:35,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53596241] [2024-11-08 16:12:35,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53596241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:35,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:35,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:12:35,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666814666] [2024-11-08 16:12:35,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:35,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:35,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:35,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:35,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:35,327 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 16:12:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:35,363 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-11-08 16:12:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:12:35,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2024-11-08 16:12:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:35,364 INFO L225 Difference]: With dead ends: 54 [2024-11-08 16:12:35,364 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 16:12:35,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:35,365 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:35,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 110 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:35,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 16:12:35,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-08 16:12:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 53 states have internal predecessors, (62), 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 16:12:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-08 16:12:35,373 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 17 [2024-11-08 16:12:35,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:35,373 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-08 16:12:35,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 16:12:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-08 16:12:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 16:12:35,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:35,374 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:35,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:12:35,374 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:35,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:35,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1725166281, now seen corresponding path program 1 times [2024-11-08 16:12:35,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:35,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964254270] [2024-11-08 16:12:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:35,994 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 16:12:35,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:35,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964254270] [2024-11-08 16:12:35,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964254270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:35,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:35,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:12:35,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056557786] [2024-11-08 16:12:35,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:35,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:12:35,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:12:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:12:35,997 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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 16:12:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:36,170 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2024-11-08 16:12:36,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 16:12:36,170 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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 17 [2024-11-08 16:12:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:36,171 INFO L225 Difference]: With dead ends: 58 [2024-11-08 16:12:36,171 INFO L226 Difference]: Without dead ends: 58 [2024-11-08 16:12:36,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:12:36,172 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:36,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 119 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:12:36,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-08 16:12:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-08 16:12:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 57 states have internal predecessors, (69), 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 16:12:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2024-11-08 16:12:36,176 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2024-11-08 16:12:36,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:36,177 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2024-11-08 16:12:36,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 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 16:12:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2024-11-08 16:12:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 16:12:36,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:36,178 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:36,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 16:12:36,180 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:36,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:36,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1725166282, now seen corresponding path program 1 times [2024-11-08 16:12:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:36,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400876795] [2024-11-08 16:12:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:36,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:36,246 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 16:12:36,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:36,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400876795] [2024-11-08 16:12:36,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400876795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:36,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:36,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:12:36,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909519479] [2024-11-08 16:12:36,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:36,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:12:36,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:36,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:12:36,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:12:36,249 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 16:12:36,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:36,308 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-11-08 16:12:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:12:36,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2024-11-08 16:12:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:36,309 INFO L225 Difference]: With dead ends: 57 [2024-11-08 16:12:36,309 INFO L226 Difference]: Without dead ends: 57 [2024-11-08 16:12:36,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:12:36,310 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:36,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-08 16:12:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-08 16:12:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 56 states have internal predecessors, (67), 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 16:12:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-08 16:12:36,317 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 17 [2024-11-08 16:12:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:36,317 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-08 16:12:36,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 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 16:12:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-08 16:12:36,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 16:12:36,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:36,318 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:36,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 16:12:36,318 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:36,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:36,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1724643112, now seen corresponding path program 1 times [2024-11-08 16:12:36,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:36,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702081296] [2024-11-08 16:12:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:36,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:36,640 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 16:12:36,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:36,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702081296] [2024-11-08 16:12:36,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702081296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:36,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:36,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 16:12:36,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676493922] [2024-11-08 16:12:36,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:36,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 16:12:36,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:36,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 16:12:36,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:12:36,642 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 16:12:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:36,719 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-11-08 16:12:36,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:12:36,720 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 17 [2024-11-08 16:12:36,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:36,720 INFO L225 Difference]: With dead ends: 73 [2024-11-08 16:12:36,721 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 16:12:36,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:12:36,721 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:36,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 159 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 16:12:36,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-08 16:12:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 72 states have internal predecessors, (83), 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 16:12:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2024-11-08 16:12:36,724 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 17 [2024-11-08 16:12:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:36,725 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2024-11-08 16:12:36,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 16:12:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2024-11-08 16:12:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 16:12:36,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:36,726 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:36,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 16:12:36,726 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:36,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:36,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1290460506, now seen corresponding path program 1 times [2024-11-08 16:12:36,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:36,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296360679] [2024-11-08 16:12:36,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:36,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:36,986 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 16:12:36,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296360679] [2024-11-08 16:12:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296360679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:36,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:36,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 16:12:36,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655426737] [2024-11-08 16:12:36,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:36,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 16:12:36,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:36,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 16:12:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:12:36,988 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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 16:12:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:37,102 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2024-11-08 16:12:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:12:37,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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 17 [2024-11-08 16:12:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:37,103 INFO L225 Difference]: With dead ends: 97 [2024-11-08 16:12:37,103 INFO L226 Difference]: Without dead ends: 97 [2024-11-08 16:12:37,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-08 16:12:37,104 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:37,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 167 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:12:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-08 16:12:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2024-11-08 16:12:37,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 74 states have internal predecessors, (87), 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 16:12:37,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2024-11-08 16:12:37,107 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 17 [2024-11-08 16:12:37,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:37,107 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2024-11-08 16:12:37,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 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 16:12:37,107 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2024-11-08 16:12:37,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 16:12:37,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:37,108 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] [2024-11-08 16:12:37,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 16:12:37,108 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:37,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:37,109 INFO L85 PathProgramCache]: Analyzing trace with hash 736986091, now seen corresponding path program 1 times [2024-11-08 16:12:37,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:37,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216236529] [2024-11-08 16:12:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:37,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:37,252 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 16:12:37,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:37,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216236529] [2024-11-08 16:12:37,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216236529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:12:37,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:12:37,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:12:37,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43817733] [2024-11-08 16:12:37,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:12:37,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 16:12:37,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:37,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 16:12:37,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 16:12:37,255 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 16:12:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:37,279 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2024-11-08 16:12:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 16:12:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2024-11-08 16:12:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:37,280 INFO L225 Difference]: With dead ends: 74 [2024-11-08 16:12:37,280 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 16:12:37,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 16:12:37,281 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:37,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 50 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:12:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 16:12:37,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-08 16:12:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.2) internal successors, (48), 42 states have internal predecessors, (48), 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 16:12:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2024-11-08 16:12:37,283 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 20 [2024-11-08 16:12:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:37,284 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2024-11-08 16:12:37,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 16:12:37,284 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-11-08 16:12:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 16:12:37,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:37,285 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:37,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 16:12:37,285 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:37,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:37,286 INFO L85 PathProgramCache]: Analyzing trace with hash -850017146, now seen corresponding path program 1 times [2024-11-08 16:12:37,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:37,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636387482] [2024-11-08 16:12:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:37,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:38,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:38,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636387482] [2024-11-08 16:12:38,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636387482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:38,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226238353] [2024-11-08 16:12:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:38,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:38,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:38,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:38,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:12:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:38,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-08 16:12:38,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:38,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 16:12:38,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 7 [2024-11-08 16:12:38,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-11-08 16:12:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:38,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:39,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226238353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:39,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:39,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2024-11-08 16:12:39,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202695380] [2024-11-08 16:12:39,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:39,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 16:12:39,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:39,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 16:12:39,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 16:12:39,923 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 34 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 34 states have internal predecessors, (55), 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 16:12:41,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:41,765 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2024-11-08 16:12:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 16:12:41,766 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 34 states have internal predecessors, (55), 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 20 [2024-11-08 16:12:41,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:41,767 INFO L225 Difference]: With dead ends: 66 [2024-11-08 16:12:41,767 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 16:12:41,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=245, Invalid=2205, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 16:12:41,769 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:41,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 222 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:12:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 16:12:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2024-11-08 16:12:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 39 states have internal predecessors, (46), 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 16:12:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-08 16:12:41,772 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 20 [2024-11-08 16:12:41,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:41,772 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-08 16:12:41,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 34 states have internal predecessors, (55), 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 16:12:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-08 16:12:41,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 16:12:41,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:41,773 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] [2024-11-08 16:12:41,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:12:41,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 16:12:41,978 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:41,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:41,979 INFO L85 PathProgramCache]: Analyzing trace with hash -663347550, now seen corresponding path program 1 times [2024-11-08 16:12:41,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:41,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681277442] [2024-11-08 16:12:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:41,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:42,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:42,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681277442] [2024-11-08 16:12:42,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681277442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:42,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146727183] [2024-11-08 16:12:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:42,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:42,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:42,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:42,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:12:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:42,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 16:12:42,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:42,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:42,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-08 16:12:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:42,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146727183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:42,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:42,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2024-11-08 16:12:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956295537] [2024-11-08 16:12:42,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:42,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 16:12:42,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 16:12:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:12:42,968 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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 16:12:43,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:43,262 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-11-08 16:12:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 16:12:43,263 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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 21 [2024-11-08 16:12:43,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:43,264 INFO L225 Difference]: With dead ends: 43 [2024-11-08 16:12:43,264 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 16:12:43,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2024-11-08 16:12:43,265 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:43,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 156 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:12:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 16:12:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-11-08 16:12:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 39 states have internal predecessors, (45), 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 16:12:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-11-08 16:12:43,270 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 21 [2024-11-08 16:12:43,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:43,270 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-11-08 16:12:43,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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 16:12:43,271 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-11-08 16:12:43,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 16:12:43,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:43,271 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:43,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:12:43,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 16:12:43,476 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:43,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash 911062417, now seen corresponding path program 1 times [2024-11-08 16:12:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:43,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085298772] [2024-11-08 16:12:43,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:43,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:44,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085298772] [2024-11-08 16:12:44,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085298772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:44,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954512924] [2024-11-08 16:12:44,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:44,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:44,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:44,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:44,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:12:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:44,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 16:12:44,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:44,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 1 [2024-11-08 16:12:44,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 16:12:44,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-08 16:12:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:12:45,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:12:45,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954512924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:45,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:45,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 30 [2024-11-08 16:12:45,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420237835] [2024-11-08 16:12:45,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:45,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 16:12:45,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:45,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 16:12:45,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2024-11-08 16:12:45,892 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 31 states, 30 states have (on average 2.033333333333333) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:46,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:46,927 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2024-11-08 16:12:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:12:46,932 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.033333333333333) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-08 16:12:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:46,933 INFO L225 Difference]: With dead ends: 43 [2024-11-08 16:12:46,933 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 16:12:46,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=155, Invalid=1327, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 16:12:46,937 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:46,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 112 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:12:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 16:12:46,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-11-08 16:12:46,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 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 16:12:46,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-08 16:12:46,939 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 22 [2024-11-08 16:12:46,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:46,940 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-08 16:12:46,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.033333333333333) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:12:46,940 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-08 16:12:46,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 16:12:46,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:46,940 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:46,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 16:12:47,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:47,143 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:47,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:47,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1180881718, now seen corresponding path program 1 times [2024-11-08 16:12:47,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:47,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711455659] [2024-11-08 16:12:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:47,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:12:47,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:47,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711455659] [2024-11-08 16:12:47,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711455659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:47,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022073764] [2024-11-08 16:12:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:47,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:47,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:47,963 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:47,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:12:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:48,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-08 16:12:48,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:48,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 16:12:48,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 7 [2024-11-08 16:12:48,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-11-08 16:12:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:12:48,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:49,614 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 16:12:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:12:49,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022073764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:49,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:49,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 11] total 33 [2024-11-08 16:12:49,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803721926] [2024-11-08 16:12:49,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:49,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 16:12:49,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:49,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 16:12:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 16:12:49,623 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 34 states have internal predecessors, (73), 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 16:12:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:50,426 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2024-11-08 16:12:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 16:12:50,427 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 34 states have internal predecessors, (73), 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 26 [2024-11-08 16:12:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:50,427 INFO L225 Difference]: With dead ends: 40 [2024-11-08 16:12:50,427 INFO L226 Difference]: Without dead ends: 30 [2024-11-08 16:12:50,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=235, Invalid=1745, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 16:12:50,429 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:50,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 151 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:12:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-08 16:12:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-08 16:12:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 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 16:12:50,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2024-11-08 16:12:50,431 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26 [2024-11-08 16:12:50,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:50,432 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2024-11-08 16:12:50,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 34 states have internal predecessors, (73), 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 16:12:50,432 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2024-11-08 16:12:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 16:12:50,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:50,433 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:50,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:12:50,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 16:12:50,638 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:50,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:50,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1181404887, now seen corresponding path program 2 times [2024-11-08 16:12:50,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:50,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284692771] [2024-11-08 16:12:50,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:50,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:51,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:51,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284692771] [2024-11-08 16:12:51,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284692771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:51,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280224132] [2024-11-08 16:12:51,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:12:51,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:51,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:51,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:51,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:12:51,415 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:12:51,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:12:51,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 16:12:51,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:51,507 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 13 treesize of output 9 [2024-11-08 16:12:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:51,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:51,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:12:51,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:12:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:51,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280224132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:51,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:51,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 22 [2024-11-08 16:12:51,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75622904] [2024-11-08 16:12:51,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:51,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 16:12:51,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 16:12:51,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2024-11-08 16:12:51,700 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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 16:12:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:51,898 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-11-08 16:12:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:12:51,898 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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 26 [2024-11-08 16:12:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:51,899 INFO L225 Difference]: With dead ends: 49 [2024-11-08 16:12:51,899 INFO L226 Difference]: Without dead ends: 36 [2024-11-08 16:12:51,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-11-08 16:12:51,900 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:51,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:12:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-08 16:12:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-08 16:12:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 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 16:12:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-08 16:12:51,902 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2024-11-08 16:12:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:51,903 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-08 16:12:51,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 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 16:12:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-08 16:12:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 16:12:51,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:51,904 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:51,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:12:52,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 16:12:52,108 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:52,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:52,109 INFO L85 PathProgramCache]: Analyzing trace with hash -509575537, now seen corresponding path program 3 times [2024-11-08 16:12:52,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:52,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029642389] [2024-11-08 16:12:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:52,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:52,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:52,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029642389] [2024-11-08 16:12:52,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029642389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:52,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225241210] [2024-11-08 16:12:52,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:12:52,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:52,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:52,642 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:52,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:12:52,758 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 16:12:52,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:12:52,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-08 16:12:52,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:52,771 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 8 treesize of output 1 [2024-11-08 16:12:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:53,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:53,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225241210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:53,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:53,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2024-11-08 16:12:53,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791612377] [2024-11-08 16:12:53,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:53,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 16:12:53,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 16:12:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:12:53,503 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 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 16:12:53,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:53,858 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-11-08 16:12:53,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:12:53,859 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 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 30 [2024-11-08 16:12:53,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:53,859 INFO L225 Difference]: With dead ends: 37 [2024-11-08 16:12:53,859 INFO L226 Difference]: Without dead ends: 37 [2024-11-08 16:12:53,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2024-11-08 16:12:53,861 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:53,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 81 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:12:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-08 16:12:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-08 16:12:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 36 states have internal predecessors, (38), 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 16:12:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-11-08 16:12:53,863 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2024-11-08 16:12:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:53,864 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-11-08 16:12:53,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.769230769230769) internal successors, (72), 27 states have internal predecessors, (72), 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 16:12:53,864 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-11-08 16:12:53,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 16:12:53,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:53,865 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:53,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:12:54,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 16:12:54,070 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:54,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1383027524, now seen corresponding path program 2 times [2024-11-08 16:12:54,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:54,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811390345] [2024-11-08 16:12:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:54,915 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:12:54,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811390345] [2024-11-08 16:12:54,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811390345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888037833] [2024-11-08 16:12:54,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:12:54,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:54,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:54,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:54,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:12:55,041 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:12:55,041 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:12:55,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-08 16:12:55,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:55,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 16:12:55,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 7 [2024-11-08 16:12:55,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-11-08 16:12:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:12:55,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:12:56,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888037833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:56,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:56,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 37 [2024-11-08 16:12:56,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210506474] [2024-11-08 16:12:56,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:56,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 16:12:56,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:56,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 16:12:56,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1286, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 16:12:56,927 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 38 states, 37 states have (on average 2.054054054054054) internal successors, (76), 38 states have internal predecessors, (76), 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 16:12:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:12:58,503 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2024-11-08 16:12:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 16:12:58,503 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.054054054054054) internal successors, (76), 38 states have internal predecessors, (76), 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 31 [2024-11-08 16:12:58,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:12:58,504 INFO L225 Difference]: With dead ends: 39 [2024-11-08 16:12:58,504 INFO L226 Difference]: Without dead ends: 39 [2024-11-08 16:12:58,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=298, Invalid=2782, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 16:12:58,506 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:12:58,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 142 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:12:58,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-08 16:12:58,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2024-11-08 16:12:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 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 16:12:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-08 16:12:58,508 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 31 [2024-11-08 16:12:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:12:58,509 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-08 16:12:58,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.054054054054054) internal successors, (76), 38 states have internal predecessors, (76), 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 16:12:58,509 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-08 16:12:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 16:12:58,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:12:58,510 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:12:58,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 16:12:58,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 16:12:58,714 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:12:58,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:12:58,714 INFO L85 PathProgramCache]: Analyzing trace with hash 407919370, now seen corresponding path program 4 times [2024-11-08 16:12:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:12:58,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887010567] [2024-11-08 16:12:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:12:58,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:12:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:12:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:59,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:12:59,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887010567] [2024-11-08 16:12:59,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887010567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:12:59,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426496342] [2024-11-08 16:12:59,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:12:59,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:12:59,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:12:59,246 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:12:59,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:12:59,397 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:12:59,397 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:12:59,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-08 16:12:59,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:12:59,540 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 13 treesize of output 9 [2024-11-08 16:12:59,679 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 7 treesize of output 3 [2024-11-08 16:12:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:59,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:12:59,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:12:59,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:12:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:12:59,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426496342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:12:59,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:12:59,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 26 [2024-11-08 16:12:59,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664657612] [2024-11-08 16:12:59,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:12:59,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 16:12:59,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:12:59,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 16:12:59,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2024-11-08 16:12:59,823 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 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 16:13:00,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:00,144 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-11-08 16:13:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 16:13:00,145 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 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 35 [2024-11-08 16:13:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:00,145 INFO L225 Difference]: With dead ends: 61 [2024-11-08 16:13:00,145 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 16:13:00,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2024-11-08 16:13:00,146 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:00,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 217 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:13:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 16:13:00,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-11-08 16:13:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 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 16:13:00,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-11-08 16:13:00,148 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 35 [2024-11-08 16:13:00,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:00,148 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-11-08 16:13:00,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 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 16:13:00,153 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-11-08 16:13:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 16:13:00,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:00,154 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:00,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 16:13:00,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 16:13:00,359 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:00,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:00,359 INFO L85 PathProgramCache]: Analyzing trace with hash 299424338, now seen corresponding path program 5 times [2024-11-08 16:13:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276488817] [2024-11-08 16:13:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:00,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:00,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:00,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276488817] [2024-11-08 16:13:00,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276488817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:00,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412804951] [2024-11-08 16:13:00,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:13:00,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:00,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:00,889 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:00,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:13:01,052 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 16:13:01,052 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:01,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-08 16:13:01,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:01,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 1 [2024-11-08 16:13:01,344 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:01,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:01,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412804951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:01,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:01,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-11-08 16:13:01,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679230317] [2024-11-08 16:13:01,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:01,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 16:13:01,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 16:13:01,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2024-11-08 16:13:01,944 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 32 states, 31 states have (on average 3.032258064516129) internal successors, (94), 32 states have internal predecessors, (94), 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 16:13:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:02,281 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2024-11-08 16:13:02,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 16:13:02,282 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.032258064516129) internal successors, (94), 32 states have internal predecessors, (94), 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 39 [2024-11-08 16:13:02,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:02,282 INFO L225 Difference]: With dead ends: 45 [2024-11-08 16:13:02,282 INFO L226 Difference]: Without dead ends: 45 [2024-11-08 16:13:02,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 16:13:02,284 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:02,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 108 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:13:02,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-08 16:13:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-08 16:13:02,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 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 16:13:02,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-11-08 16:13:02,286 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 39 [2024-11-08 16:13:02,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:02,287 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-11-08 16:13:02,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.032258064516129) internal successors, (94), 32 states have internal predecessors, (94), 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 16:13:02,287 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-11-08 16:13:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 16:13:02,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:02,288 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:02,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 16:13:02,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 16:13:02,492 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:02,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:02,492 INFO L85 PathProgramCache]: Analyzing trace with hash -522591961, now seen corresponding path program 6 times [2024-11-08 16:13:02,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:02,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125056003] [2024-11-08 16:13:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:02,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:03,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:03,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125056003] [2024-11-08 16:13:03,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125056003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:03,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087137014] [2024-11-08 16:13:03,221 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:13:03,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:03,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:03,223 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:03,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:13:03,404 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-08 16:13:03,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:03,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-08 16:13:03,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:03,560 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 13 treesize of output 9 [2024-11-08 16:13:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:03,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:03,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:13:03,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:13:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087137014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:03,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:03,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 28 [2024-11-08 16:13:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194952845] [2024-11-08 16:13:03,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:03,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 16:13:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 16:13:03,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2024-11-08 16:13:03,852 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 28 states have internal predecessors, (68), 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 16:13:04,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:04,206 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2024-11-08 16:13:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 16:13:04,207 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 28 states have internal predecessors, (68), 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 44 [2024-11-08 16:13:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:04,207 INFO L225 Difference]: With dead ends: 75 [2024-11-08 16:13:04,207 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 16:13:04,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2024-11-08 16:13:04,208 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:04,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 269 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:13:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 16:13:04,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2024-11-08 16:13:04,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 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 16:13:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2024-11-08 16:13:04,210 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 44 [2024-11-08 16:13:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:04,210 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2024-11-08 16:13:04,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4285714285714284) internal successors, (68), 28 states have internal predecessors, (68), 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 16:13:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2024-11-08 16:13:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 16:13:04,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:04,212 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:04,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 16:13:04,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:04,416 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:04,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1142428383, now seen corresponding path program 7 times [2024-11-08 16:13:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114089637] [2024-11-08 16:13:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 6 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:05,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:05,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114089637] [2024-11-08 16:13:05,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114089637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:05,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201980795] [2024-11-08 16:13:05,042 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:13:05,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:05,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:05,045 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:05,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:13:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:05,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-08 16:13:05,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:05,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:05,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-08 16:13:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:05,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201980795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:05,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:05,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2024-11-08 16:13:05,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090131842] [2024-11-08 16:13:05,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:05,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 16:13:05,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:05,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 16:13:05,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 16:13:05,916 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 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 16:13:06,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:06,411 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2024-11-08 16:13:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 16:13:06,411 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 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 48 [2024-11-08 16:13:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:06,412 INFO L225 Difference]: With dead ends: 54 [2024-11-08 16:13:06,412 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 16:13:06,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=1323, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 16:13:06,413 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:06,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 200 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:13:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 16:13:06,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-08 16:13:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 53 states have internal predecessors, (55), 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 16:13:06,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-11-08 16:13:06,416 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 48 [2024-11-08 16:13:06,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:06,416 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-11-08 16:13:06,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 34 states have internal predecessors, (97), 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 16:13:06,417 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-11-08 16:13:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 16:13:06,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:06,417 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:06,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 16:13:06,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:06,618 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:06,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:06,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1107756870, now seen corresponding path program 8 times [2024-11-08 16:13:06,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:06,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917388443] [2024-11-08 16:13:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:06,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:07,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:07,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917388443] [2024-11-08 16:13:07,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917388443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:07,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173833800] [2024-11-08 16:13:07,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:13:07,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:07,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:07,440 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:07,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 16:13:07,586 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:13:07,586 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:07,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-08 16:13:07,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:07,788 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 13 treesize of output 9 [2024-11-08 16:13:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:07,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:07,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:13:07,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:13:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 14 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:08,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173833800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:08,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 31 [2024-11-08 16:13:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655156590] [2024-11-08 16:13:08,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:08,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 16:13:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 16:13:08,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2024-11-08 16:13:08,089 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:08,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:08,555 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2024-11-08 16:13:08,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 16:13:08,556 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-08 16:13:08,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:08,556 INFO L225 Difference]: With dead ends: 89 [2024-11-08 16:13:08,556 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 16:13:08,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 16:13:08,558 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:08,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 356 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:13:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 16:13:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2024-11-08 16:13:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 57 states have internal predecessors, (59), 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 16:13:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2024-11-08 16:13:08,564 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 53 [2024-11-08 16:13:08,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:08,565 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2024-11-08 16:13:08,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 31 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2024-11-08 16:13:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 16:13:08,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:08,566 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:08,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 16:13:08,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:08,767 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:08,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:08,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1007995390, now seen corresponding path program 9 times [2024-11-08 16:13:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:08,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662718087] [2024-11-08 16:13:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:08,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:09,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:09,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662718087] [2024-11-08 16:13:09,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662718087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:09,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581761277] [2024-11-08 16:13:09,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:13:09,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:09,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:09,607 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:09,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 16:13:09,818 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-08 16:13:09,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:09,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-08 16:13:09,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:10,269 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 32 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:10,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:10,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2024-11-08 16:13:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 32 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:10,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581761277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:10,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:10,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2024-11-08 16:13:10,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159345713] [2024-11-08 16:13:10,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:10,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 16:13:10,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:10,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 16:13:10,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1668, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 16:13:10,983 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 44 states, 43 states have (on average 3.255813953488372) internal successors, (140), 44 states have internal predecessors, (140), 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 16:13:11,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:11,602 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2024-11-08 16:13:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 16:13:11,603 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 3.255813953488372) internal successors, (140), 44 states have internal predecessors, (140), 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 57 [2024-11-08 16:13:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:11,603 INFO L225 Difference]: With dead ends: 63 [2024-11-08 16:13:11,603 INFO L226 Difference]: Without dead ends: 63 [2024-11-08 16:13:11,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=302, Invalid=2148, Unknown=0, NotChecked=0, Total=2450 [2024-11-08 16:13:11,605 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:11,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 259 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:13:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-08 16:13:11,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-08 16:13:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 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 16:13:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-11-08 16:13:11,608 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 57 [2024-11-08 16:13:11,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:11,608 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-11-08 16:13:11,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 3.255813953488372) internal successors, (140), 44 states have internal predecessors, (140), 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 16:13:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-11-08 16:13:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 16:13:11,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:11,610 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:11,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 16:13:11,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:11,811 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:11,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:11,811 INFO L85 PathProgramCache]: Analyzing trace with hash 526209911, now seen corresponding path program 10 times [2024-11-08 16:13:11,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:11,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158953607] [2024-11-08 16:13:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:11,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:12,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:12,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158953607] [2024-11-08 16:13:12,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158953607] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:12,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219907334] [2024-11-08 16:13:12,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:13:12,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:12,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:12,793 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:12,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 16:13:12,999 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:13:12,999 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:13,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-08 16:13:13,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:13,208 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 13 treesize of output 9 [2024-11-08 16:13:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:13,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:13,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:13:13,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:13:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 17 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:13,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219907334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:13,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:13,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 34 [2024-11-08 16:13:13,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880128839] [2024-11-08 16:13:13,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:13,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 16:13:13,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 16:13:13,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1031, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 16:13:13,518 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 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 16:13:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:14,079 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2024-11-08 16:13:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 16:13:14,080 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 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 62 [2024-11-08 16:13:14,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:14,080 INFO L225 Difference]: With dead ends: 103 [2024-11-08 16:13:14,080 INFO L226 Difference]: Without dead ends: 70 [2024-11-08 16:13:14,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=1361, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 16:13:14,081 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:14,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 421 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:13:14,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-08 16:13:14,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2024-11-08 16:13:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 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 16:13:14,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2024-11-08 16:13:14,084 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 62 [2024-11-08 16:13:14,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:14,084 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2024-11-08 16:13:14,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 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 16:13:14,085 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2024-11-08 16:13:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 16:13:14,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:14,085 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:14,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 16:13:14,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-08 16:13:14,286 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:14,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash -565737681, now seen corresponding path program 11 times [2024-11-08 16:13:14,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:14,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914068565] [2024-11-08 16:13:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:14,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 28 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:15,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:15,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914068565] [2024-11-08 16:13:15,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914068565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:15,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758429037] [2024-11-08 16:13:15,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:13:15,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:15,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:15,430 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:15,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 16:13:15,736 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-08 16:13:15,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:15,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-08 16:13:15,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:15,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 1 [2024-11-08 16:13:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:16,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 45 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:17,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758429037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:17,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:17,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 46 [2024-11-08 16:13:17,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084719169] [2024-11-08 16:13:17,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:17,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 16:13:17,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 16:13:17,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1894, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 16:13:17,297 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 47 states, 46 states have (on average 3.4782608695652173) internal successors, (160), 47 states have internal predecessors, (160), 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 16:13:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:18,191 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2024-11-08 16:13:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 16:13:18,192 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 3.4782608695652173) internal successors, (160), 47 states have internal predecessors, (160), 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 16:13:18,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:18,192 INFO L225 Difference]: With dead ends: 72 [2024-11-08 16:13:18,192 INFO L226 Difference]: Without dead ends: 72 [2024-11-08 16:13:18,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=336, Invalid=2526, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 16:13:18,193 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:18,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 274 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:13:18,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-08 16:13:18,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-08 16:13:18,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 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 16:13:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-11-08 16:13:18,196 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 66 [2024-11-08 16:13:18,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:18,196 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-11-08 16:13:18,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 3.4782608695652173) internal successors, (160), 47 states have internal predecessors, (160), 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 16:13:18,196 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-11-08 16:13:18,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 16:13:18,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:18,197 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:18,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 16:13:18,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 16:13:18,398 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:18,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:18,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1546275222, now seen corresponding path program 12 times [2024-11-08 16:13:18,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:18,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428590982] [2024-11-08 16:13:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:18,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:19,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:19,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428590982] [2024-11-08 16:13:19,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428590982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:19,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184661754] [2024-11-08 16:13:19,589 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:13:19,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:19,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:19,591 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:19,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 16:13:20,010 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-08 16:13:20,010 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:20,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-08 16:13:20,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:20,429 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 16:13:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:20,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:21,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:13:21,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:13:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 20 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:21,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184661754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:21,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:21,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 54 [2024-11-08 16:13:21,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086373336] [2024-11-08 16:13:21,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:21,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 16:13:21,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:21,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 16:13:21,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2698, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 16:13:21,566 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 54 states, 54 states have (on average 3.0555555555555554) internal successors, (165), 54 states have internal predecessors, (165), 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 16:13:22,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:22,487 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2024-11-08 16:13:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 16:13:22,487 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.0555555555555554) internal successors, (165), 54 states have internal predecessors, (165), 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 71 [2024-11-08 16:13:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:22,488 INFO L225 Difference]: With dead ends: 117 [2024-11-08 16:13:22,488 INFO L226 Difference]: Without dead ends: 79 [2024-11-08 16:13:22,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=199, Invalid=3341, Unknown=0, NotChecked=0, Total=3540 [2024-11-08 16:13:22,490 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1471 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:22,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 724 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1471 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:13:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-08 16:13:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2024-11-08 16:13:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 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 16:13:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-11-08 16:13:22,493 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 71 [2024-11-08 16:13:22,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:22,493 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-11-08 16:13:22,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.0555555555555554) internal successors, (165), 54 states have internal predecessors, (165), 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 16:13:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-11-08 16:13:22,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 16:13:22,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:22,494 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:22,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 16:13:22,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 16:13:22,695 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:22,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:22,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1115566514, now seen corresponding path program 13 times [2024-11-08 16:13:22,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:22,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208141389] [2024-11-08 16:13:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:22,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 45 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:23,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:23,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208141389] [2024-11-08 16:13:23,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208141389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:23,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519684647] [2024-11-08 16:13:23,795 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:13:23,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:23,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:23,797 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:23,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 16:13:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:24,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-08 16:13:24,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 66 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:24,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:25,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-08 16:13:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 66 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:25,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519684647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:25,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:25,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 45 [2024-11-08 16:13:25,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066632492] [2024-11-08 16:13:25,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:25,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-08 16:13:25,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:25,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-08 16:13:25,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1858, Unknown=0, NotChecked=0, Total=2070 [2024-11-08 16:13:25,391 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 46 states, 45 states have (on average 3.3555555555555556) internal successors, (151), 46 states have internal predecessors, (151), 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 16:13:26,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:26,346 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2024-11-08 16:13:26,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 16:13:26,346 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.3555555555555556) internal successors, (151), 46 states have internal predecessors, (151), 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 75 [2024-11-08 16:13:26,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:26,347 INFO L225 Difference]: With dead ends: 81 [2024-11-08 16:13:26,347 INFO L226 Difference]: Without dead ends: 81 [2024-11-08 16:13:26,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 117 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=288, Invalid=2574, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 16:13:26,349 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:26,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 433 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:13:26,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-08 16:13:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-08 16:13:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:13:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2024-11-08 16:13:26,352 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 75 [2024-11-08 16:13:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:26,352 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2024-11-08 16:13:26,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.3555555555555556) internal successors, (151), 46 states have internal predecessors, (151), 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 16:13:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2024-11-08 16:13:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-08 16:13:26,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:26,354 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:26,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 16:13:26,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:26,555 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:26,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:26,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1757685191, now seen corresponding path program 14 times [2024-11-08 16:13:26,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:26,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646991724] [2024-11-08 16:13:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:26,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:27,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646991724] [2024-11-08 16:13:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646991724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68324315] [2024-11-08 16:13:27,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:13:27,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:27,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:27,924 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:27,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 16:13:28,151 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:13:28,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:28,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-08 16:13:28,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:28,445 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 13 treesize of output 9 [2024-11-08 16:13:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:28,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:28,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:13:28,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:13:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 23 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68324315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:28,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 40 [2024-11-08 16:13:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832580767] [2024-11-08 16:13:28,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:28,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-08 16:13:28,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-08 16:13:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1455, Unknown=0, NotChecked=0, Total=1560 [2024-11-08 16:13:28,850 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 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 16:13:29,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:29,740 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2024-11-08 16:13:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 16:13:29,741 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 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 80 [2024-11-08 16:13:29,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:29,741 INFO L225 Difference]: With dead ends: 131 [2024-11-08 16:13:29,742 INFO L226 Difference]: Without dead ends: 88 [2024-11-08 16:13:29,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=145, Invalid=2017, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 16:13:29,742 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:29,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 765 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:13:29,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-08 16:13:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2024-11-08 16:13:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 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 16:13:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2024-11-08 16:13:29,745 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 80 [2024-11-08 16:13:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:29,746 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2024-11-08 16:13:29,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.025) internal successors, (121), 40 states have internal predecessors, (121), 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 16:13:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2024-11-08 16:13:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-08 16:13:29,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:29,747 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:29,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 16:13:29,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:29,947 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:29,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash -987899009, now seen corresponding path program 15 times [2024-11-08 16:13:29,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968531641] [2024-11-08 16:13:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:29,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 66 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:31,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:31,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968531641] [2024-11-08 16:13:31,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968531641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:31,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484465038] [2024-11-08 16:13:31,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:13:31,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:31,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:31,327 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:31,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 16:13:32,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 16:13:32,482 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:32,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-08 16:13:32,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 98 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:33,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:34,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2024-11-08 16:13:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 98 proven. 178 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:34,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484465038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:34,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:34,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 58 [2024-11-08 16:13:34,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230908653] [2024-11-08 16:13:34,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:34,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 16:13:34,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:34,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 16:13:34,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=3000, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 16:13:34,333 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 59 states, 58 states have (on average 3.603448275862069) internal successors, (209), 59 states have internal predecessors, (209), 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 16:13:35,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:35,284 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2024-11-08 16:13:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 16:13:35,284 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 3.603448275862069) internal successors, (209), 59 states have internal predecessors, (209), 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 84 [2024-11-08 16:13:35,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:35,285 INFO L225 Difference]: With dead ends: 90 [2024-11-08 16:13:35,285 INFO L226 Difference]: Without dead ends: 90 [2024-11-08 16:13:35,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 123 SyntacticMatches, 9 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1627 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=569, Invalid=3987, Unknown=0, NotChecked=0, Total=4556 [2024-11-08 16:13:35,287 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:35,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 361 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:13:35,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-08 16:13:35,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-08 16:13:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 89 states have internal predecessors, (91), 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 16:13:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2024-11-08 16:13:35,291 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 84 [2024-11-08 16:13:35,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:35,291 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2024-11-08 16:13:35,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 3.603448275862069) internal successors, (209), 59 states have internal predecessors, (209), 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 16:13:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2024-11-08 16:13:35,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-08 16:13:35,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:35,292 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:35,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 16:13:35,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-08 16:13:35,493 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:35,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:35,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1918342170, now seen corresponding path program 16 times [2024-11-08 16:13:35,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:35,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417509994] [2024-11-08 16:13:35,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:35,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 26 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:36,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:36,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417509994] [2024-11-08 16:13:36,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417509994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:36,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514707154] [2024-11-08 16:13:36,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:13:36,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:36,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:36,914 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:36,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 16:13:37,469 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:13:37,470 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:37,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-08 16:13:37,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:37,822 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 13 treesize of output 9 [2024-11-08 16:13:38,032 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 7 treesize of output 3 [2024-11-08 16:13:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 26 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:38,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:38,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:13:38,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:13:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 26 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:38,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514707154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:38,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:38,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 44 [2024-11-08 16:13:38,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097703490] [2024-11-08 16:13:38,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:38,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 16:13:38,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:38,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 16:13:38,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1777, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 16:13:38,257 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 44 states, 44 states have (on average 3.090909090909091) internal successors, (136), 44 states have internal predecessors, (136), 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 16:13:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:39,347 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2024-11-08 16:13:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 16:13:39,348 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.090909090909091) internal successors, (136), 44 states have internal predecessors, (136), 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 89 [2024-11-08 16:13:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:39,348 INFO L225 Difference]: With dead ends: 145 [2024-11-08 16:13:39,349 INFO L226 Difference]: Without dead ends: 97 [2024-11-08 16:13:39,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=160, Invalid=2492, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 16:13:39,349 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:39,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 907 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:13:39,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-08 16:13:39,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2024-11-08 16:13:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.021505376344086) internal successors, (95), 93 states have internal predecessors, (95), 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 16:13:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2024-11-08 16:13:39,353 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 89 [2024-11-08 16:13:39,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:39,353 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2024-11-08 16:13:39,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.090909090909091) internal successors, (136), 44 states have internal predecessors, (136), 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 16:13:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2024-11-08 16:13:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 16:13:39,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:39,355 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:39,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-08 16:13:39,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-08 16:13:39,556 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:39,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:39,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1810025826, now seen corresponding path program 17 times [2024-11-08 16:13:39,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:39,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648781307] [2024-11-08 16:13:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:39,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 91 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:41,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:41,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648781307] [2024-11-08 16:13:41,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648781307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:41,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012382497] [2024-11-08 16:13:41,069 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:13:41,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:41,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:41,073 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:41,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 16:13:41,978 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-08 16:13:41,978 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:41,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-08 16:13:41,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:41,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 1 [2024-11-08 16:13:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 120 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:42,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 120 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:44,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012382497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:44,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:44,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 61 [2024-11-08 16:13:44,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383439254] [2024-11-08 16:13:44,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:44,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-08 16:13:44,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:44,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-08 16:13:44,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=3310, Unknown=0, NotChecked=0, Total=3782 [2024-11-08 16:13:44,155 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 62 states, 61 states have (on average 3.7049180327868854) internal successors, (226), 62 states have internal predecessors, (226), 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 16:13:45,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:45,393 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2024-11-08 16:13:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 16:13:45,393 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 3.7049180327868854) internal successors, (226), 62 states have internal predecessors, (226), 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 93 [2024-11-08 16:13:45,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:45,394 INFO L225 Difference]: With dead ends: 99 [2024-11-08 16:13:45,394 INFO L226 Difference]: Without dead ends: 99 [2024-11-08 16:13:45,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=585, Invalid=4527, Unknown=0, NotChecked=0, Total=5112 [2024-11-08 16:13:45,395 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:45,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:13:45,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-08 16:13:45,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-08 16:13:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 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 16:13:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2024-11-08 16:13:45,399 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 93 [2024-11-08 16:13:45,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:45,400 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2024-11-08 16:13:45,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 3.7049180327868854) internal successors, (226), 62 states have internal predecessors, (226), 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 16:13:45,400 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2024-11-08 16:13:45,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-08 16:13:45,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:45,402 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:45,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 16:13:45,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:45,603 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:45,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:45,604 INFO L85 PathProgramCache]: Analyzing trace with hash 693983255, now seen corresponding path program 18 times [2024-11-08 16:13:45,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:45,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400733891] [2024-11-08 16:13:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:45,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:47,173 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 29 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:47,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:47,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400733891] [2024-11-08 16:13:47,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400733891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:47,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854999008] [2024-11-08 16:13:47,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:13:47,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:47,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:47,176 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:47,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 16:13:49,112 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-08 16:13:49,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:49,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-08 16:13:49,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:49,530 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 13 treesize of output 9 [2024-11-08 16:13:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 29 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:49,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:49,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:13:49,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:13:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 29 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:49,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854999008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:49,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:49,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 46 [2024-11-08 16:13:49,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612654110] [2024-11-08 16:13:49,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:49,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-08 16:13:49,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-08 16:13:49,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1951, Unknown=0, NotChecked=0, Total=2070 [2024-11-08 16:13:49,993 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 16:13:51,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:51,268 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2024-11-08 16:13:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 16:13:51,269 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 98 [2024-11-08 16:13:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:51,269 INFO L225 Difference]: With dead ends: 159 [2024-11-08 16:13:51,269 INFO L226 Difference]: Without dead ends: 106 [2024-11-08 16:13:51,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=169, Invalid=2801, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 16:13:51,270 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:51,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1074 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 16:13:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-08 16:13:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2024-11-08 16:13:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 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 16:13:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-11-08 16:13:51,274 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 98 [2024-11-08 16:13:51,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:51,274 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-11-08 16:13:51,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 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 16:13:51,274 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-11-08 16:13:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 16:13:51,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:51,275 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:51,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 16:13:51,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-08 16:13:51,476 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:51,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash -888533041, now seen corresponding path program 19 times [2024-11-08 16:13:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:51,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526560094] [2024-11-08 16:13:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 120 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:52,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:52,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526560094] [2024-11-08 16:13:52,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526560094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:52,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001262677] [2024-11-08 16:13:52,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:13:52,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:52,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:52,891 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:52,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 16:13:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:53,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-08 16:13:53,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 153 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:53,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:54,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-08 16:13:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 153 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:54,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001262677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:54,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:54,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 57 [2024-11-08 16:13:54,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950766741] [2024-11-08 16:13:54,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:54,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-08 16:13:54,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:54,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-08 16:13:54,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=2965, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 16:13:54,892 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 58 states, 57 states have (on average 3.5964912280701755) internal successors, (205), 58 states have internal predecessors, (205), 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 16:13:56,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:13:56,239 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2024-11-08 16:13:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 16:13:56,239 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.5964912280701755) internal successors, (205), 58 states have internal predecessors, (205), 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 102 [2024-11-08 16:13:56,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:13:56,240 INFO L225 Difference]: With dead ends: 108 [2024-11-08 16:13:56,240 INFO L226 Difference]: Without dead ends: 108 [2024-11-08 16:13:56,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 162 SyntacticMatches, 11 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=462, Invalid=4230, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 16:13:56,241 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:13:56,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 556 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 16:13:56,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-08 16:13:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-08 16:13:56,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 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 16:13:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2024-11-08 16:13:56,244 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 102 [2024-11-08 16:13:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:13:56,244 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2024-11-08 16:13:56,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.5964912280701755) internal successors, (205), 58 states have internal predecessors, (205), 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 16:13:56,245 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2024-11-08 16:13:56,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 16:13:56,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:13:56,246 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:13:56,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-08 16:13:56,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-08 16:13:56,447 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:13:56,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:13:56,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2073062966, now seen corresponding path program 20 times [2024-11-08 16:13:56,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:13:56,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372180250] [2024-11-08 16:13:56,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:13:56,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:13:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:13:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 32 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:58,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:13:58,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372180250] [2024-11-08 16:13:58,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372180250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:13:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643183462] [2024-11-08 16:13:58,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:13:58,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:13:58,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:13:58,258 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:13:58,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 16:13:58,537 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:13:58,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:13:58,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-08 16:13:58,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:13:59,019 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 13 treesize of output 9 [2024-11-08 16:13:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 32 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:59,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:13:59,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:13:59,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:13:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 32 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:13:59,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643183462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:13:59,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:13:59,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 49 [2024-11-08 16:13:59,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393397704] [2024-11-08 16:13:59,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:13:59,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 16:13:59,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:13:59,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 16:13:59,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=2226, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 16:13:59,532 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 49 states, 49 states have (on average 3.2653061224489797) internal successors, (160), 49 states have internal predecessors, (160), 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 16:14:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:14:01,224 INFO L93 Difference]: Finished difference Result 173 states and 174 transitions. [2024-11-08 16:14:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 16:14:01,225 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.2653061224489797) internal successors, (160), 49 states have internal predecessors, (160), 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 107 [2024-11-08 16:14:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:14:01,225 INFO L225 Difference]: With dead ends: 173 [2024-11-08 16:14:01,225 INFO L226 Difference]: Without dead ends: 115 [2024-11-08 16:14:01,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=181, Invalid=3241, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 16:14:01,226 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 26 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:14:01,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1340 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 16:14:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-08 16:14:01,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2024-11-08 16:14:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 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 16:14:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-11-08 16:14:01,230 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 107 [2024-11-08 16:14:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:14:01,230 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-11-08 16:14:01,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.2653061224489797) internal successors, (160), 49 states have internal predecessors, (160), 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 16:14:01,230 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-11-08 16:14:01,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 16:14:01,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:14:01,232 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:01,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-08 16:14:01,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-08 16:14:01,433 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:14:01,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:01,433 INFO L85 PathProgramCache]: Analyzing trace with hash 417990930, now seen corresponding path program 21 times [2024-11-08 16:14:01,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:01,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286135889] [2024-11-08 16:14:01,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:01,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:03,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:03,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286135889] [2024-11-08 16:14:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286135889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136159268] [2024-11-08 16:14:03,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:14:03,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:03,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:03,073 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:03,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 16:14:04,309 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-08 16:14:04,310 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:14:04,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-08 16:14:04,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 200 proven. 328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:05,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:06,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2024-11-08 16:14:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 200 proven. 328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:07,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136159268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:07,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:07,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 73 [2024-11-08 16:14:07,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599076681] [2024-11-08 16:14:07,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:07,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-08 16:14:07,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:07,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-08 16:14:07,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=692, Invalid=4710, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 16:14:07,050 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 74 states, 73 states have (on average 3.808219178082192) internal successors, (278), 74 states have internal predecessors, (278), 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 16:14:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:14:08,722 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2024-11-08 16:14:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 16:14:08,723 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 3.808219178082192) internal successors, (278), 74 states have internal predecessors, (278), 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 111 [2024-11-08 16:14:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:14:08,723 INFO L225 Difference]: With dead ends: 117 [2024-11-08 16:14:08,723 INFO L226 Difference]: Without dead ends: 117 [2024-11-08 16:14:08,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 165 SyntacticMatches, 12 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2812 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=926, Invalid=6384, Unknown=0, NotChecked=0, Total=7310 [2024-11-08 16:14:08,725 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:14:08,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 696 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 16:14:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-08 16:14:08,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-08 16:14:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 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 16:14:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2024-11-08 16:14:08,729 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 111 [2024-11-08 16:14:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:14:08,730 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2024-11-08 16:14:08,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 3.808219178082192) internal successors, (278), 74 states have internal predecessors, (278), 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 16:14:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2024-11-08 16:14:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-08 16:14:08,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:14:08,732 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:08,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-08 16:14:08,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:08,933 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:14:08,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1660414567, now seen corresponding path program 22 times [2024-11-08 16:14:08,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:08,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336973846] [2024-11-08 16:14:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:08,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 35 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:10,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:10,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336973846] [2024-11-08 16:14:10,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336973846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:10,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268339153] [2024-11-08 16:14:10,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:14:10,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:10,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:10,768 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:10,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 16:14:11,812 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:14:11,812 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:14:11,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 136 conjuncts are in the unsatisfiable core [2024-11-08 16:14:11,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:12,380 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 13 treesize of output 9 [2024-11-08 16:14:12,670 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 35 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:12,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:12,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:14:12,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:14:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 35 proven. 550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:13,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268339153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:13,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:13,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 52 [2024-11-08 16:14:13,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460727562] [2024-11-08 16:14:13,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:13,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 16:14:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:13,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 16:14:13,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2519, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 16:14:13,033 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 52 states, 52 states have (on average 3.326923076923077) internal successors, (173), 52 states have internal predecessors, (173), 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 16:14:14,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:14:14,914 INFO L93 Difference]: Finished difference Result 187 states and 188 transitions. [2024-11-08 16:14:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 16:14:14,915 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.326923076923077) internal successors, (173), 52 states have internal predecessors, (173), 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 116 [2024-11-08 16:14:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:14:14,915 INFO L225 Difference]: With dead ends: 187 [2024-11-08 16:14:14,916 INFO L226 Difference]: Without dead ends: 124 [2024-11-08 16:14:14,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=193, Invalid=3713, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 16:14:14,917 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 34 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 2764 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:14:14,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1342 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2764 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 16:14:14,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-08 16:14:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2024-11-08 16:14:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 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 16:14:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2024-11-08 16:14:14,921 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 116 [2024-11-08 16:14:14,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:14:14,921 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2024-11-08 16:14:14,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.326923076923077) internal successors, (173), 52 states have internal predecessors, (173), 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 16:14:14,922 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2024-11-08 16:14:14,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-08 16:14:14,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:14:14,923 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:14,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-08 16:14:15,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:15,124 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:14:15,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash 268117023, now seen corresponding path program 23 times [2024-11-08 16:14:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:15,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287356352] [2024-11-08 16:14:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 190 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:16,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287356352] [2024-11-08 16:14:16,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287356352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:16,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110362968] [2024-11-08 16:14:16,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:14:16,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:16,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:16,784 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:16,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 16:14:19,795 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-08 16:14:19,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:14:19,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-11-08 16:14:19,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:19,815 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 8 treesize of output 1 [2024-11-08 16:14:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 231 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:20,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 231 proven. 399 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:22,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110362968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:22,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:22,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 76 [2024-11-08 16:14:22,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490301614] [2024-11-08 16:14:22,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:22,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-08 16:14:22,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-08 16:14:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=739, Invalid=5113, Unknown=0, NotChecked=0, Total=5852 [2024-11-08 16:14:22,841 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 77 states, 76 states have (on average 3.8421052631578947) internal successors, (292), 77 states have internal predecessors, (292), 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 16:14:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:14:24,761 INFO L93 Difference]: Finished difference Result 126 states and 127 transitions. [2024-11-08 16:14:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 16:14:24,761 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 3.8421052631578947) internal successors, (292), 77 states have internal predecessors, (292), 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 120 [2024-11-08 16:14:24,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:14:24,762 INFO L225 Difference]: With dead ends: 126 [2024-11-08 16:14:24,762 INFO L226 Difference]: Without dead ends: 126 [2024-11-08 16:14:24,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2368 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=906, Invalid=7104, Unknown=0, NotChecked=0, Total=8010 [2024-11-08 16:14:24,763 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:14:24,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 816 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 16:14:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-08 16:14:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-08 16:14:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.016) internal successors, (127), 125 states have internal predecessors, (127), 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 16:14:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2024-11-08 16:14:24,767 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 120 [2024-11-08 16:14:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:14:24,768 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2024-11-08 16:14:24,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 3.8421052631578947) internal successors, (292), 77 states have internal predecessors, (292), 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 16:14:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2024-11-08 16:14:24,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 16:14:24,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:14:24,770 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:24,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-08 16:14:24,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:24,971 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:14:24,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1468968826, now seen corresponding path program 24 times [2024-11-08 16:14:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:24,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629428871] [2024-11-08 16:14:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 38 proven. 654 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:26,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:26,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629428871] [2024-11-08 16:14:26,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629428871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:26,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935070681] [2024-11-08 16:14:26,767 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:14:26,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:26,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:26,770 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:26,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 16:14:32,817 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-08 16:14:32,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:14:32,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 148 conjuncts are in the unsatisfiable core [2024-11-08 16:14:32,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:33,436 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 13 treesize of output 9 [2024-11-08 16:14:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 38 proven. 654 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:33,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:33,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:14:33,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:14:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 38 proven. 654 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:33,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935070681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:33,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:33,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 55 [2024-11-08 16:14:33,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707248435] [2024-11-08 16:14:33,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:33,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 16:14:33,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:33,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 16:14:33,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=2830, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 16:14:33,990 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand has 55 states, 55 states have (on average 3.3636363636363638) internal successors, (185), 55 states have internal predecessors, (185), 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 16:14:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:14:36,033 INFO L93 Difference]: Finished difference Result 201 states and 202 transitions. [2024-11-08 16:14:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-08 16:14:36,034 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.3636363636363638) internal successors, (185), 55 states have internal predecessors, (185), 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 125 [2024-11-08 16:14:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:14:36,035 INFO L225 Difference]: With dead ends: 201 [2024-11-08 16:14:36,035 INFO L226 Difference]: Without dead ends: 133 [2024-11-08 16:14:36,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=205, Invalid=4217, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 16:14:36,036 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 33 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 3539 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 3552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:14:36,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1732 Invalid, 3552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3539 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 16:14:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-08 16:14:36,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2024-11-08 16:14:36,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 129 states have internal predecessors, (131), 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 16:14:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 131 transitions. [2024-11-08 16:14:36,040 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 131 transitions. Word has length 125 [2024-11-08 16:14:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:14:36,040 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 131 transitions. [2024-11-08 16:14:36,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.3636363636363638) internal successors, (185), 55 states have internal predecessors, (185), 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 16:14:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 131 transitions. [2024-11-08 16:14:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-08 16:14:36,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:14:36,042 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:36,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-08 16:14:36,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-08 16:14:36,243 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:14:36,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:36,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1931156286, now seen corresponding path program 25 times [2024-11-08 16:14:36,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:36,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868282241] [2024-11-08 16:14:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:36,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:38,097 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 231 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:38,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868282241] [2024-11-08 16:14:38,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868282241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:38,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248714640] [2024-11-08 16:14:38,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:14:38,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:38,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:38,099 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:38,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 16:14:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:38,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 135 conjuncts are in the unsatisfiable core [2024-11-08 16:14:38,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 276 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:39,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:40,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-08 16:14:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 276 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:40,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248714640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:40,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:40,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 69 [2024-11-08 16:14:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230581422] [2024-11-08 16:14:40,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:40,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-08 16:14:40,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:40,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-08 16:14:40,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=4324, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 16:14:40,790 INFO L87 Difference]: Start difference. First operand 130 states and 131 transitions. Second operand has 70 states, 69 states have (on average 3.753623188405797) internal successors, (259), 70 states have internal predecessors, (259), 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 16:14:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:14:42,871 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2024-11-08 16:14:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-08 16:14:42,872 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 3.753623188405797) internal successors, (259), 70 states have internal predecessors, (259), 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 129 [2024-11-08 16:14:42,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:14:42,873 INFO L225 Difference]: With dead ends: 135 [2024-11-08 16:14:42,873 INFO L226 Difference]: Without dead ends: 135 [2024-11-08 16:14:42,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 207 SyntacticMatches, 14 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2710 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=681, Invalid=6291, Unknown=0, NotChecked=0, Total=6972 [2024-11-08 16:14:42,874 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 3051 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 3051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:14:42,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 882 Invalid, 3051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3051 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 16:14:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-08 16:14:42,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-08 16:14:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 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 16:14:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-11-08 16:14:42,877 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 129 [2024-11-08 16:14:42,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:14:42,877 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-11-08 16:14:42,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 3.753623188405797) internal successors, (259), 70 states have internal predecessors, (259), 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 16:14:42,878 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-11-08 16:14:42,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-08 16:14:42,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:14:42,879 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:42,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-08 16:14:43,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-08 16:14:43,080 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:14:43,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:43,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1021500599, now seen corresponding path program 26 times [2024-11-08 16:14:43,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:43,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804898552] [2024-11-08 16:14:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:43,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:45,191 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 41 proven. 767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:45,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:45,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804898552] [2024-11-08 16:14:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804898552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941963055] [2024-11-08 16:14:45,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:14:45,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:45,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:45,193 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:45,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-08 16:14:45,505 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:14:45,506 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:14:45,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 158 conjuncts are in the unsatisfiable core [2024-11-08 16:14:45,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:14:46,168 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 13 treesize of output 9 [2024-11-08 16:14:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 41 proven. 767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:46,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:14:46,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:14:46,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:14:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 41 proven. 767 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:46,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941963055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:14:46,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:14:46,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 58 [2024-11-08 16:14:46,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413400094] [2024-11-08 16:14:46,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:14:46,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-08 16:14:46,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:14:46,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-08 16:14:46,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3159, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 16:14:46,775 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 58 states, 58 states have (on average 3.4310344827586206) internal successors, (199), 58 states have internal predecessors, (199), 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 16:14:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:14:48,923 INFO L93 Difference]: Finished difference Result 215 states and 216 transitions. [2024-11-08 16:14:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-08 16:14:48,924 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.4310344827586206) internal successors, (199), 58 states have internal predecessors, (199), 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 134 [2024-11-08 16:14:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:14:48,925 INFO L225 Difference]: With dead ends: 215 [2024-11-08 16:14:48,925 INFO L226 Difference]: Without dead ends: 142 [2024-11-08 16:14:48,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=217, Invalid=4753, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 16:14:48,926 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 35 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 4107 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 4120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:14:48,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2047 Invalid, 4120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 4107 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 16:14:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-08 16:14:48,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2024-11-08 16:14:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 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 16:14:48,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2024-11-08 16:14:48,930 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 134 [2024-11-08 16:14:48,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:14:48,930 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2024-11-08 16:14:48,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.4310344827586206) internal successors, (199), 58 states have internal predecessors, (199), 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 16:14:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2024-11-08 16:14:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-08 16:14:48,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:14:48,932 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:14:48,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-08 16:14:49,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-08 16:14:49,133 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:14:49,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:14:49,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1855973265, now seen corresponding path program 27 times [2024-11-08 16:14:49,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:14:49,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022522639] [2024-11-08 16:14:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:14:49,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:14:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:14:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 276 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:14:51,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:14:51,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022522639] [2024-11-08 16:14:51,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022522639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:14:51,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337547102] [2024-11-08 16:14:51,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:14:51,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:14:51,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:14:51,347 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:14:51,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-08 16:15:01,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-08 16:15:01,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:15:01,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-08 16:15:01,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:15:01,429 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 8 treesize of output 1 [2024-11-08 16:15:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 338 proven. 523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:03,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:15:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 338 proven. 523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:06,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337547102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:15:06,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:15:06,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 103 [2024-11-08 16:15:06,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485002879] [2024-11-08 16:15:06,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:15:06,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-08 16:15:06,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:15:06,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-08 16:15:06,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1367, Invalid=9345, Unknown=0, NotChecked=0, Total=10712 [2024-11-08 16:15:06,020 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand has 104 states, 103 states have (on average 3.941747572815534) internal successors, (406), 104 states have internal predecessors, (406), 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 16:15:08,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:15:08,263 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2024-11-08 16:15:08,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-08 16:15:08,264 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 3.941747572815534) internal successors, (406), 104 states have internal predecessors, (406), 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 138 [2024-11-08 16:15:08,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:15:08,265 INFO L225 Difference]: With dead ends: 144 [2024-11-08 16:15:08,265 INFO L226 Difference]: Without dead ends: 144 [2024-11-08 16:15:08,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4703 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1721, Invalid=12321, Unknown=0, NotChecked=0, Total=14042 [2024-11-08 16:15:08,266 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:15:08,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 814 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 16:15:08,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-08 16:15:08,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-08 16:15:08,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.013986013986014) internal successors, (145), 143 states have internal predecessors, (145), 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 16:15:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-11-08 16:15:08,271 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 138 [2024-11-08 16:15:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:15:08,271 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-11-08 16:15:08,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 3.941747572815534) internal successors, (406), 104 states have internal predecessors, (406), 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 16:15:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-11-08 16:15:08,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-08 16:15:08,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:15:08,273 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:15:08,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-08 16:15:08,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-08 16:15:08,474 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:15:08,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:15:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -73011926, now seen corresponding path program 28 times [2024-11-08 16:15:08,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:15:08,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357303781] [2024-11-08 16:15:08,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:15:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 44 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:10,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:15:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357303781] [2024-11-08 16:15:10,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357303781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:15:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315962592] [2024-11-08 16:15:10,801 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:15:10,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:15:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:15:10,802 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:15:10,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-08 16:15:18,288 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:15:18,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:15:18,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 166 conjuncts are in the unsatisfiable core [2024-11-08 16:15:18,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:15:19,009 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 13 treesize of output 9 [2024-11-08 16:15:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 44 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:19,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:15:19,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:15:19,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:15:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 44 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:19,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315962592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:15:19,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:15:19,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 61 [2024-11-08 16:15:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239517639] [2024-11-08 16:15:19,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:15:19,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-08 16:15:19,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:15:19,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-08 16:15:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3506, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 16:15:19,573 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 61 states, 61 states have (on average 3.4754098360655736) internal successors, (212), 61 states have internal predecessors, (212), 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 16:15:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:15:21,812 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2024-11-08 16:15:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-08 16:15:21,813 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.4754098360655736) internal successors, (212), 61 states have internal predecessors, (212), 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 143 [2024-11-08 16:15:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:15:21,814 INFO L225 Difference]: With dead ends: 229 [2024-11-08 16:15:21,814 INFO L226 Difference]: Without dead ends: 151 [2024-11-08 16:15:21,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=229, Invalid=5321, Unknown=0, NotChecked=0, Total=5550 [2024-11-08 16:15:21,815 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 37 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 4337 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:15:21,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2142 Invalid, 4351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4337 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 16:15:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-08 16:15:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2024-11-08 16:15:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 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 16:15:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2024-11-08 16:15:21,818 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 143 [2024-11-08 16:15:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:15:21,819 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2024-11-08 16:15:21,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.4754098360655736) internal successors, (212), 61 states have internal predecessors, (212), 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 16:15:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2024-11-08 16:15:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-08 16:15:21,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:15:21,820 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:15:21,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-08 16:15:22,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:15:22,020 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:15:22,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:15:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash -442212238, now seen corresponding path program 29 times [2024-11-08 16:15:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:15:22,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516936377] [2024-11-08 16:15:22,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:22,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:15:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 325 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:24,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:15:24,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516936377] [2024-11-08 16:15:24,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516936377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:15:24,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910975142] [2024-11-08 16:15:24,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:15:24,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:15:24,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:15:24,081 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:15:24,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-08 16:15:27,305 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-08 16:15:27,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:15:27,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 161 conjuncts are in the unsatisfiable core [2024-11-08 16:15:27,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:15:27,330 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 8 treesize of output 1 [2024-11-08 16:15:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 378 proven. 612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:28,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:15:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 378 proven. 612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:31,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910975142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:15:31,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:15:31,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 91 [2024-11-08 16:15:31,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913358354] [2024-11-08 16:15:31,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:15:31,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-08 16:15:31,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:15:31,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-08 16:15:31,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1069, Invalid=7303, Unknown=0, NotChecked=0, Total=8372 [2024-11-08 16:15:31,029 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand has 92 states, 91 states have (on average 3.934065934065934) internal successors, (358), 92 states have internal predecessors, (358), 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 16:15:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:15:33,523 INFO L93 Difference]: Finished difference Result 153 states and 154 transitions. [2024-11-08 16:15:33,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-08 16:15:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 3.934065934065934) internal successors, (358), 92 states have internal predecessors, (358), 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 147 [2024-11-08 16:15:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:15:33,525 INFO L225 Difference]: With dead ends: 153 [2024-11-08 16:15:33,525 INFO L226 Difference]: Without dead ends: 153 [2024-11-08 16:15:33,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3568 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1299, Invalid=10257, Unknown=0, NotChecked=0, Total=11556 [2024-11-08 16:15:33,526 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 3534 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 3534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:15:33,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1072 Invalid, 3534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3534 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 16:15:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-08 16:15:33,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-11-08 16:15:33,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 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 16:15:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2024-11-08 16:15:33,529 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 147 [2024-11-08 16:15:33,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:15:33,529 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2024-11-08 16:15:33,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 3.934065934065934) internal successors, (358), 92 states have internal predecessors, (358), 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 16:15:33,530 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2024-11-08 16:15:33,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-08 16:15:33,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:15:33,531 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:15:33,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-08 16:15:33,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-08 16:15:33,732 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:15:33,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:15:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1813172473, now seen corresponding path program 30 times [2024-11-08 16:15:33,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:15:33,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869136496] [2024-11-08 16:15:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:15:33,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:15:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:15:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 47 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:15:36,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:15:36,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869136496] [2024-11-08 16:15:36,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869136496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:15:36,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682215075] [2024-11-08 16:15:36,417 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:15:36,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:15:36,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:15:36,418 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:15:36,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-08 16:16:13,512 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-08 16:16:13,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:16:13,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 176 conjuncts are in the unsatisfiable core [2024-11-08 16:16:13,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:16:14,342 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 13 treesize of output 9 [2024-11-08 16:16:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 47 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:14,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:16:14,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:16:14,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:16:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 47 proven. 1020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:14,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682215075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:16:14,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:16:14,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 64 [2024-11-08 16:16:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467655350] [2024-11-08 16:16:14,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:16:14,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-08 16:16:14,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:16:14,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-08 16:16:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=3871, Unknown=0, NotChecked=0, Total=4032 [2024-11-08 16:16:14,931 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 64 states, 64 states have (on average 3.5) internal successors, (224), 64 states have internal predecessors, (224), 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 16:16:17,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:16:17,243 INFO L93 Difference]: Finished difference Result 243 states and 244 transitions. [2024-11-08 16:16:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-08 16:16:17,244 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.5) internal successors, (224), 64 states have internal predecessors, (224), 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 152 [2024-11-08 16:16:17,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:16:17,245 INFO L225 Difference]: With dead ends: 243 [2024-11-08 16:16:17,245 INFO L226 Difference]: Without dead ends: 160 [2024-11-08 16:16:17,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=241, Invalid=5921, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 16:16:17,246 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 4328 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 4344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:16:17,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2066 Invalid, 4344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4328 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 16:16:17,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-08 16:16:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2024-11-08 16:16:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 156 states have internal predecessors, (158), 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 16:16:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2024-11-08 16:16:17,249 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 152 [2024-11-08 16:16:17,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:16:17,250 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2024-11-08 16:16:17,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.5) internal successors, (224), 64 states have internal predecessors, (224), 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 16:16:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2024-11-08 16:16:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-08 16:16:17,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:16:17,251 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:16:17,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-08 16:16:17,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:16:17,452 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:16:17,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:16:17,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1171788609, now seen corresponding path program 31 times [2024-11-08 16:16:17,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:16:17,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090811181] [2024-11-08 16:16:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:16:17,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:16:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:16:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 378 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:19,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:16:19,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090811181] [2024-11-08 16:16:19,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090811181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:16:19,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827997129] [2024-11-08 16:16:19,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:16:19,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:16:19,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:16:19,451 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:16:19,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-08 16:16:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:16:19,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 162 conjuncts are in the unsatisfiable core [2024-11-08 16:16:19,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:16:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 435 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:20,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:16:22,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-08 16:16:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 435 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:22,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827997129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:16:22,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:16:22,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 81 [2024-11-08 16:16:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538339622] [2024-11-08 16:16:22,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:16:22,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-08 16:16:22,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:16:22,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-08 16:16:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=5935, Unknown=0, NotChecked=0, Total=6642 [2024-11-08 16:16:22,741 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand has 82 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 82 states have internal predecessors, (313), 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 16:16:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:16:25,330 INFO L93 Difference]: Finished difference Result 162 states and 163 transitions. [2024-11-08 16:16:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-08 16:16:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 82 states have internal predecessors, (313), 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 156 [2024-11-08 16:16:25,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:16:25,331 INFO L225 Difference]: With dead ends: 162 [2024-11-08 16:16:25,332 INFO L226 Difference]: Without dead ends: 162 [2024-11-08 16:16:25,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 252 SyntacticMatches, 17 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3934 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=945, Invalid=8757, Unknown=0, NotChecked=0, Total=9702 [2024-11-08 16:16:25,332 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 4258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 4258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:16:25,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1185 Invalid, 4258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4258 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 16:16:25,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-08 16:16:25,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-08 16:16:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.0124223602484472) internal successors, (163), 161 states have internal predecessors, (163), 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 16:16:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 163 transitions. [2024-11-08 16:16:25,336 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 163 transitions. Word has length 156 [2024-11-08 16:16:25,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:16:25,336 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 163 transitions. [2024-11-08 16:16:25,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 3.8641975308641974) internal successors, (313), 82 states have internal predecessors, (313), 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 16:16:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 163 transitions. [2024-11-08 16:16:25,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 16:16:25,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:16:25,337 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:16:25,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-08 16:16:25,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:16:25,538 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:16:25,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:16:25,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2094642470, now seen corresponding path program 32 times [2024-11-08 16:16:25,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:16:25,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957072106] [2024-11-08 16:16:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:16:25,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:16:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:16:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 50 proven. 1160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:28,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:16:28,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957072106] [2024-11-08 16:16:28,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957072106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:16:28,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592369153] [2024-11-08 16:16:28,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:16:28,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:16:28,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:16:28,205 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:16:28,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-08 16:16:28,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:16:28,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:16:28,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 190 conjuncts are in the unsatisfiable core [2024-11-08 16:16:28,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:16:29,453 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 13 treesize of output 9 [2024-11-08 16:16:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 50 proven. 1160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:29,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:16:29,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:16:29,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:16:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 50 proven. 1160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592369153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:16:30,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:16:30,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 67 [2024-11-08 16:16:30,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267296235] [2024-11-08 16:16:30,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:16:30,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-08 16:16:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:16:30,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-08 16:16:30,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=4254, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 16:16:30,140 INFO L87 Difference]: Start difference. First operand 162 states and 163 transitions. Second operand has 67 states, 67 states have (on average 3.5522388059701493) internal successors, (238), 67 states have internal predecessors, (238), 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 16:16:32,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:16:32,776 INFO L93 Difference]: Finished difference Result 257 states and 258 transitions. [2024-11-08 16:16:32,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-08 16:16:32,777 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.5522388059701493) internal successors, (238), 67 states have internal predecessors, (238), 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 161 [2024-11-08 16:16:32,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:16:32,778 INFO L225 Difference]: With dead ends: 257 [2024-11-08 16:16:32,778 INFO L226 Difference]: Without dead ends: 169 [2024-11-08 16:16:32,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=253, Invalid=6553, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 16:16:32,779 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 44 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 4908 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 4924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:16:32,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 2351 Invalid, 4924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4908 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 16:16:32,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-08 16:16:32,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2024-11-08 16:16:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 165 states have internal predecessors, (167), 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 16:16:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 167 transitions. [2024-11-08 16:16:32,783 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 167 transitions. Word has length 161 [2024-11-08 16:16:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:16:32,783 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 167 transitions. [2024-11-08 16:16:32,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.5522388059701493) internal successors, (238), 67 states have internal predecessors, (238), 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 16:16:32,784 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 167 transitions. [2024-11-08 16:16:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-08 16:16:32,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:16:32,785 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:16:32,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-08 16:16:32,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-08 16:16:32,987 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:16:32,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:16:32,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1954972638, now seen corresponding path program 33 times [2024-11-08 16:16:32,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:16:32,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523374169] [2024-11-08 16:16:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:16:32,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:16:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:16:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 435 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:35,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:16:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523374169] [2024-11-08 16:16:35,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523374169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:16:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398149648] [2024-11-08 16:16:35,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:16:35,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:16:35,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:16:35,381 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:16:35,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-08 16:16:50,690 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-08 16:16:50,690 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:16:50,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 140 conjuncts are in the unsatisfiable core [2024-11-08 16:16:50,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:16:50,715 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 8 treesize of output 1 [2024-11-08 16:16:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 512 proven. 763 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:52,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:16:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 512 proven. 763 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:16:55,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398149648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:16:55,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:16:55,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 121 [2024-11-08 16:16:55,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011892103] [2024-11-08 16:16:55,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:16:55,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-11-08 16:16:55,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:16:55,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-11-08 16:16:55,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1928, Invalid=12834, Unknown=0, NotChecked=0, Total=14762 [2024-11-08 16:16:55,670 INFO L87 Difference]: Start difference. First operand 166 states and 167 transitions. Second operand has 122 states, 121 states have (on average 4.024793388429752) internal successors, (487), 122 states have internal predecessors, (487), 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 16:16:58,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:16:58,434 INFO L93 Difference]: Finished difference Result 171 states and 172 transitions. [2024-11-08 16:16:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-08 16:16:58,435 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 4.024793388429752) internal successors, (487), 122 states have internal predecessors, (487), 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 165 [2024-11-08 16:16:58,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:16:58,436 INFO L225 Difference]: With dead ends: 171 [2024-11-08 16:16:58,436 INFO L226 Difference]: Without dead ends: 171 [2024-11-08 16:16:58,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6704 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2408, Invalid=17052, Unknown=0, NotChecked=0, Total=19460 [2024-11-08 16:16:58,437 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:16:58,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1152 Invalid, 3506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 16:16:58,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-08 16:16:58,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-08 16:16:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.011764705882353) internal successors, (172), 170 states have internal predecessors, (172), 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 16:16:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2024-11-08 16:16:58,440 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 165 [2024-11-08 16:16:58,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:16:58,441 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2024-11-08 16:16:58,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 4.024793388429752) internal successors, (487), 122 states have internal predecessors, (487), 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 16:16:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2024-11-08 16:16:58,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-08 16:16:58,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:16:58,442 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:16:58,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-08 16:16:58,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-08 16:16:58,643 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:16:58,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:16:58,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1973034665, now seen corresponding path program 34 times [2024-11-08 16:16:58,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:16:58,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341422860] [2024-11-08 16:16:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:16:58,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:16:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 53 proven. 1309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:01,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:17:01,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341422860] [2024-11-08 16:17:01,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341422860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:17:01,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731011984] [2024-11-08 16:17:01,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:17:01,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:17:01,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:17:01,221 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:17:01,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-08 16:17:14,591 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:17:14,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:17:14,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 196 conjuncts are in the unsatisfiable core [2024-11-08 16:17:14,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:17:15,530 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 13 treesize of output 9 [2024-11-08 16:17:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 53 proven. 1309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:15,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:17:16,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:17:16,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:17:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1362 backedges. 53 proven. 1309 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:16,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731011984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:17:16,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:17:16,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 70 [2024-11-08 16:17:16,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479636607] [2024-11-08 16:17:16,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:17:16,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-08 16:17:16,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:17:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-08 16:17:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=4655, Unknown=0, NotChecked=0, Total=4830 [2024-11-08 16:17:16,255 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 70 states, 70 states have (on average 3.585714285714286) internal successors, (251), 70 states have internal predecessors, (251), 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 16:17:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:17:19,202 INFO L93 Difference]: Finished difference Result 271 states and 272 transitions. [2024-11-08 16:17:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-08 16:17:19,202 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 3.585714285714286) internal successors, (251), 70 states have internal predecessors, (251), 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 170 [2024-11-08 16:17:19,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:17:19,203 INFO L225 Difference]: With dead ends: 271 [2024-11-08 16:17:19,203 INFO L226 Difference]: Without dead ends: 178 [2024-11-08 16:17:19,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=265, Invalid=7217, Unknown=0, NotChecked=0, Total=7482 [2024-11-08 16:17:19,204 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 40 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 5615 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 5632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 5615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:17:19,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2721 Invalid, 5632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 5615 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 16:17:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-08 16:17:19,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2024-11-08 16:17:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 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 16:17:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-11-08 16:17:19,208 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 170 [2024-11-08 16:17:19,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:17:19,208 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-11-08 16:17:19,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 3.585714285714286) internal successors, (251), 70 states have internal predecessors, (251), 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 16:17:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-11-08 16:17:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-08 16:17:19,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:17:19,209 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:17:19,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-08 16:17:19,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:17:19,410 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:17:19,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:17:19,410 INFO L85 PathProgramCache]: Analyzing trace with hash -222191345, now seen corresponding path program 35 times [2024-11-08 16:17:19,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:17:19,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162365228] [2024-11-08 16:17:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:17:19,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:17:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 496 proven. 935 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:22,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:17:22,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162365228] [2024-11-08 16:17:22,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162365228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:17:22,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505823727] [2024-11-08 16:17:22,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:17:22,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:17:22,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:17:22,129 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:17:22,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-08 16:17:33,818 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-08 16:17:33,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:17:33,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 186 conjuncts are in the unsatisfiable core [2024-11-08 16:17:33,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:17:33,852 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 8 treesize of output 1 [2024-11-08 16:17:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 561 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:35,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:17:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 561 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:38,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505823727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:17:38,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:17:38,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 106 [2024-11-08 16:17:38,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975356702] [2024-11-08 16:17:38,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:17:38,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-08 16:17:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:17:38,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-08 16:17:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1462, Invalid=9880, Unknown=0, NotChecked=0, Total=11342 [2024-11-08 16:17:38,672 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 107 states, 106 states have (on average 4.0) internal successors, (424), 107 states have internal predecessors, (424), 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 16:17:41,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:17:41,706 INFO L93 Difference]: Finished difference Result 180 states and 181 transitions. [2024-11-08 16:17:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-08 16:17:41,706 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 4.0) internal successors, (424), 107 states have internal predecessors, (424), 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 174 [2024-11-08 16:17:41,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:17:41,707 INFO L225 Difference]: With dead ends: 180 [2024-11-08 16:17:41,707 INFO L226 Difference]: Without dead ends: 180 [2024-11-08 16:17:41,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5011 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1764, Invalid=13986, Unknown=0, NotChecked=0, Total=15750 [2024-11-08 16:17:41,709 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 3976 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 3976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:17:41,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1134 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3976 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 16:17:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-08 16:17:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-08 16:17:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.011173184357542) internal successors, (181), 179 states have internal predecessors, (181), 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 16:17:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2024-11-08 16:17:41,713 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 174 [2024-11-08 16:17:41,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:17:41,713 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2024-11-08 16:17:41,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 4.0) internal successors, (424), 107 states have internal predecessors, (424), 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 16:17:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2024-11-08 16:17:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-08 16:17:41,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:17:41,715 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:17:41,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-08 16:17:41,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:17:41,916 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:17:41,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:17:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1929431178, now seen corresponding path program 36 times [2024-11-08 16:17:41,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:17:41,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902686387] [2024-11-08 16:17:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:17:41,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:17:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:17:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 56 proven. 1467 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:17:44,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:17:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902686387] [2024-11-08 16:17:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902686387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:17:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149524883] [2024-11-08 16:17:44,994 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:17:44,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:17:44,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:17:44,995 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:17:44,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-08 16:18:39,411 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-11-08 16:18:39,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:18:39,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 300 conjuncts are in the unsatisfiable core [2024-11-08 16:18:39,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:18:40,927 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 16:18:42,933 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 7 treesize of output 3 [2024-11-08 16:18:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 56 proven. 1467 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:42,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:18:43,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:18:43,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:18:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1523 backedges. 56 proven. 1467 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:44,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149524883] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:18:44,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:18:44,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 114 [2024-11-08 16:18:44,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650873911] [2024-11-08 16:18:44,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:18:44,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2024-11-08 16:18:44,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2024-11-08 16:18:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=12550, Unknown=0, NotChecked=0, Total=12882 [2024-11-08 16:18:44,779 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand has 114 states, 114 states have (on average 3.763157894736842) internal successors, (429), 114 states have internal predecessors, (429), 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 16:18:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:48,863 INFO L93 Difference]: Finished difference Result 285 states and 286 transitions. [2024-11-08 16:18:48,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-08 16:18:48,863 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 3.763157894736842) internal successors, (429), 114 states have internal predecessors, (429), 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 179 [2024-11-08 16:18:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:48,864 INFO L225 Difference]: With dead ends: 285 [2024-11-08 16:18:48,864 INFO L226 Difference]: Without dead ends: 187 [2024-11-08 16:18:48,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3385 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=439, Invalid=16853, Unknown=0, NotChecked=0, Total=17292 [2024-11-08 16:18:48,865 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 42 mSDsluCounter, 3894 mSDsCounter, 0 mSdLazyCounter, 7967 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3955 SdHoareTripleChecker+Invalid, 7986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 7967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:48,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3955 Invalid, 7986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 7967 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 16:18:48,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-08 16:18:48,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 184. [2024-11-08 16:18:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.010928961748634) internal successors, (185), 183 states have internal predecessors, (185), 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 16:18:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-11-08 16:18:48,868 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 179 [2024-11-08 16:18:48,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:48,868 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-11-08 16:18:48,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 3.763157894736842) internal successors, (429), 114 states have internal predecessors, (429), 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 16:18:48,868 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-11-08 16:18:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-08 16:18:48,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:48,869 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:48,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-08 16:18:49,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-08 16:18:49,070 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:18:49,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1590347822, now seen corresponding path program 37 times [2024-11-08 16:18:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:49,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886408631] [2024-11-08 16:18:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:49,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 561 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:51,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:18:51,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886408631] [2024-11-08 16:18:51,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886408631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:18:51,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000165711] [2024-11-08 16:18:51,763 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:18:51,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:51,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:18:51,764 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:18:51,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-08 16:18:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:18:52,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 189 conjuncts are in the unsatisfiable core [2024-11-08 16:18:52,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:18:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 630 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:53,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:18:55,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-08 16:18:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 630 proven. 966 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:18:55,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000165711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:18:55,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:18:55,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 93 [2024-11-08 16:18:55,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113680947] [2024-11-08 16:18:55,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:18:55,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-08 16:18:55,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:18:55,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-08 16:18:55,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=944, Invalid=7798, Unknown=0, NotChecked=0, Total=8742 [2024-11-08 16:18:55,901 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 94 states, 93 states have (on average 3.946236559139785) internal successors, (367), 94 states have internal predecessors, (367), 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 16:18:59,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:18:59,040 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2024-11-08 16:18:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-08 16:18:59,041 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.946236559139785) internal successors, (367), 94 states have internal predecessors, (367), 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 183 [2024-11-08 16:18:59,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:18:59,041 INFO L225 Difference]: With dead ends: 189 [2024-11-08 16:18:59,042 INFO L226 Difference]: Without dead ends: 189 [2024-11-08 16:18:59,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 297 SyntacticMatches, 20 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5383 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1254, Invalid=11628, Unknown=0, NotChecked=0, Total=12882 [2024-11-08 16:18:59,043 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 5238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 5238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:18:59,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1535 Invalid, 5238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5238 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 16:18:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-08 16:18:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-08 16:18:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.0106382978723405) internal successors, (190), 188 states have internal predecessors, (190), 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 16:18:59,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2024-11-08 16:18:59,046 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 183 [2024-11-08 16:18:59,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:18:59,047 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2024-11-08 16:18:59,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.946236559139785) internal successors, (367), 94 states have internal predecessors, (367), 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 16:18:59,047 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2024-11-08 16:18:59,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-08 16:18:59,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:18:59,048 INFO L215 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:18:59,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-08 16:18:59,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:18:59,253 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:18:59,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:18:59,253 INFO L85 PathProgramCache]: Analyzing trace with hash 404485031, now seen corresponding path program 38 times [2024-11-08 16:18:59,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:18:59,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203047409] [2024-11-08 16:18:59,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:18:59,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:18:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:19:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 59 proven. 1634 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:19:02,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:19:02,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203047409] [2024-11-08 16:19:02,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203047409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:19:02,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120754435] [2024-11-08 16:19:02,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:19:02,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:19:02,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:19:02,327 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:19:02,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-08 16:19:02,818 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:19:02,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:19:02,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 216 conjuncts are in the unsatisfiable core [2024-11-08 16:19:02,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:19:03,937 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 13 treesize of output 9 [2024-11-08 16:19:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 59 proven. 1634 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:19:04,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:19:04,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:19:04,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:19:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 59 proven. 1634 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:19:04,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120754435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:19:04,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:19:04,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 76 [2024-11-08 16:19:04,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809675012] [2024-11-08 16:19:04,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:19:04,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-08 16:19:04,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:19:04,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-08 16:19:04,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=5511, Unknown=0, NotChecked=0, Total=5700 [2024-11-08 16:19:04,642 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand has 76 states, 76 states have (on average 3.6447368421052633) internal successors, (277), 76 states have internal predecessors, (277), 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 16:19:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:19:08,286 INFO L93 Difference]: Finished difference Result 299 states and 300 transitions. [2024-11-08 16:19:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 16:19:08,286 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.6447368421052633) internal successors, (277), 76 states have internal predecessors, (277), 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 188 [2024-11-08 16:19:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:19:08,287 INFO L225 Difference]: With dead ends: 299 [2024-11-08 16:19:08,287 INFO L226 Difference]: Without dead ends: 196 [2024-11-08 16:19:08,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=289, Invalid=8641, Unknown=0, NotChecked=0, Total=8930 [2024-11-08 16:19:08,288 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 47 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 7154 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 7173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 7154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:19:08,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3563 Invalid, 7173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 7154 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-08 16:19:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-08 16:19:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-11-08 16:19:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 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 16:19:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2024-11-08 16:19:08,292 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 188 [2024-11-08 16:19:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:19:08,293 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2024-11-08 16:19:08,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.6447368421052633) internal successors, (277), 76 states have internal predecessors, (277), 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 16:19:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2024-11-08 16:19:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-08 16:19:08,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:19:08,294 INFO L215 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:19:08,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-08 16:19:08,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:19:08,495 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:19:08,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:19:08,495 INFO L85 PathProgramCache]: Analyzing trace with hash 823932255, now seen corresponding path program 39 times [2024-11-08 16:19:08,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:19:08,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376964634] [2024-11-08 16:19:08,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:19:08,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:19:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:19:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 630 proven. 1140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:19:11,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:19:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376964634] [2024-11-08 16:19:11,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376964634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:19:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878523367] [2024-11-08 16:19:11,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:19:11,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:19:11,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:19:11,741 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:19:11,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-08 16:20:04,970 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-11-08 16:20:04,970 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:20:05,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 161 conjuncts are in the unsatisfiable core [2024-11-08 16:20:05,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:05,015 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 8 treesize of output 1 [2024-11-08 16:20:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 722 proven. 1048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:20:07,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 722 proven. 1048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:20:11,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878523367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:11,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:11,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 139 [2024-11-08 16:20:11,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445491460] [2024-11-08 16:20:11,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:11,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2024-11-08 16:20:11,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2024-11-08 16:20:11,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2588, Invalid=16872, Unknown=0, NotChecked=0, Total=19460 [2024-11-08 16:20:11,907 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand has 140 states, 139 states have (on average 4.086330935251799) internal successors, (568), 140 states have internal predecessors, (568), 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 16:20:15,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:15,153 INFO L93 Difference]: Finished difference Result 198 states and 199 transitions. [2024-11-08 16:20:15,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 16:20:15,154 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 139 states have (on average 4.086330935251799) internal successors, (568), 140 states have internal predecessors, (568), 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 192 [2024-11-08 16:20:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:15,155 INFO L225 Difference]: With dead ends: 198 [2024-11-08 16:20:15,155 INFO L226 Difference]: Without dead ends: 198 [2024-11-08 16:20:15,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9056 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=3212, Invalid=22548, Unknown=0, NotChecked=0, Total=25760 [2024-11-08 16:20:15,156 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 3717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:15,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1233 Invalid, 3717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 16:20:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-08 16:20:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-11-08 16:20:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 197 states have internal predecessors, (199), 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 16:20:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2024-11-08 16:20:15,160 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 192 [2024-11-08 16:20:15,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:15,161 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2024-11-08 16:20:15,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 139 states have (on average 4.086330935251799) internal successors, (568), 140 states have internal predecessors, (568), 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 16:20:15,161 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2024-11-08 16:20:15,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-08 16:20:15,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:15,162 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:15,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-08 16:20:15,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:15,363 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:20:15,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:15,363 INFO L85 PathProgramCache]: Analyzing trace with hash 849765946, now seen corresponding path program 40 times [2024-11-08 16:20:15,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:15,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813100843] [2024-11-08 16:20:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:15,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 62 proven. 1810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:20:19,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:19,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813100843] [2024-11-08 16:20:19,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813100843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:19,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135971441] [2024-11-08 16:20:19,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:20:19,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:19,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:19,018 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:19,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-08 16:20:28,490 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:20:28,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:20:28,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 226 conjuncts are in the unsatisfiable core [2024-11-08 16:20:28,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:29,710 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 13 treesize of output 9 [2024-11-08 16:20:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 62 proven. 1810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:20:30,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:30,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-08 16:20:30,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-08 16:20:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 62 proven. 1810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:20:30,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135971441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:30,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:30,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 79 [2024-11-08 16:20:30,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809929909] [2024-11-08 16:20:30,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:30,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-08 16:20:30,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:30,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-08 16:20:30,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=5966, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 16:20:30,457 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand has 79 states, 79 states have (on average 3.670886075949367) internal successors, (290), 79 states have internal predecessors, (290), 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 16:20:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:34,706 INFO L93 Difference]: Finished difference Result 313 states and 314 transitions. [2024-11-08 16:20:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-08 16:20:34,707 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.670886075949367) internal successors, (290), 79 states have internal predecessors, (290), 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 197 [2024-11-08 16:20:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:34,708 INFO L225 Difference]: With dead ends: 313 [2024-11-08 16:20:34,708 INFO L226 Difference]: Without dead ends: 205 [2024-11-08 16:20:34,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=301, Invalid=9401, Unknown=0, NotChecked=0, Total=9702 [2024-11-08 16:20:34,708 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 52 mSDsluCounter, 3970 mSDsCounter, 0 mSdLazyCounter, 8223 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 8243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 8223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:34,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 4037 Invalid, 8243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 8223 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 16:20:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-08 16:20:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2024-11-08 16:20:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 201 states have internal predecessors, (203), 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 16:20:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 203 transitions. [2024-11-08 16:20:34,712 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 203 transitions. Word has length 197 [2024-11-08 16:20:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:34,713 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 203 transitions. [2024-11-08 16:20:34,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.670886075949367) internal successors, (290), 79 states have internal predecessors, (290), 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 16:20:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 203 transitions. [2024-11-08 16:20:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-08 16:20:34,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:34,714 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:34,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-08 16:20:34,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:34,915 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:20:34,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:34,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1948816258, now seen corresponding path program 41 times [2024-11-08 16:20:34,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:34,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229920893] [2024-11-08 16:20:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:34,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 703 proven. 1250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:20:38,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:38,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229920893] [2024-11-08 16:20:38,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229920893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:38,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712097308] [2024-11-08 16:20:38,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:20:38,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:38,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:38,668 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:38,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-08 16:20:58,777 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-08 16:20:58,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:20:58,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 213 conjuncts are in the unsatisfiable core [2024-11-08 16:20:58,801 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:58,808 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 8 treesize of output 1 [2024-11-08 16:21:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 780 proven. 1173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:00,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:21:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 780 proven. 1173 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712097308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:21:04,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:21:04,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 121 [2024-11-08 16:21:04,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109053381] [2024-11-08 16:21:04,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:21:04,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-11-08 16:21:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-11-08 16:21:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1918, Invalid=12844, Unknown=0, NotChecked=0, Total=14762 [2024-11-08 16:21:04,672 INFO L87 Difference]: Start difference. First operand 202 states and 203 transitions. Second operand has 122 states, 121 states have (on average 4.049586776859504) internal successors, (490), 122 states have internal predecessors, (490), 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 16:21:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:08,837 INFO L93 Difference]: Finished difference Result 207 states and 208 transitions. [2024-11-08 16:21:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-08 16:21:08,838 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 4.049586776859504) internal successors, (490), 122 states have internal predecessors, (490), 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 201 [2024-11-08 16:21:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:08,839 INFO L225 Difference]: With dead ends: 207 [2024-11-08 16:21:08,839 INFO L226 Difference]: Without dead ends: 207 [2024-11-08 16:21:08,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6697 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=2301, Invalid=18291, Unknown=0, NotChecked=0, Total=20592 [2024-11-08 16:21:08,840 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 6189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 6189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:08,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1877 Invalid, 6189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6189 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 16:21:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-08 16:21:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-08 16:21:08,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0097087378640777) internal successors, (208), 206 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:21:08,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-11-08 16:21:08,843 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 201 [2024-11-08 16:21:08,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:08,843 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-11-08 16:21:08,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 4.049586776859504) internal successors, (490), 122 states have internal predecessors, (490), 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 16:21:08,844 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-11-08 16:21:08,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-08 16:21:08,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:08,844 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:08,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-11-08 16:21:09,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-11-08 16:21:09,045 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 16:21:09,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1705089545, now seen corresponding path program 42 times [2024-11-08 16:21:09,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:09,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881973785] [2024-11-08 16:21:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:09,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2060 backedges. 65 proven. 1995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:21:12,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:12,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881973785] [2024-11-08 16:21:12,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881973785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:21:12,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647230266] [2024-11-08 16:21:12,919 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:21:12,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:21:12,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:21:12,920 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:21:12,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4924665c-4de9-491f-afaf-4c5df8622425/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process