./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.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_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/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_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/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_01f1ec48-389a-4e87-b303-e916cf6a5a3c/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 e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:04:46,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:04:46,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:04:46,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:04:46,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:04:46,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:04:46,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:04:46,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:04:46,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:04:46,427 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:04:46,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:04:46,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:04:46,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:04:46,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:04:46,429 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:04:46,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:04:46,430 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:04:46,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:04:46,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:04:46,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:04:46,438 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:04:46,439 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:04:46,439 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:04:46,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:04:46,443 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:04:46,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:04:46,444 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:04:46,444 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:04:46,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:04:46,445 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:04:46,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:04:46,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:04:46,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:04:46,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:04:46,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:04:46,448 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:04:46,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:04:46,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:04:46,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:04:46,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:04:46,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:04:46,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:04:46,451 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_01f1ec48-389a-4e87-b303-e916cf6a5a3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-08 17:04:46,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:04:46,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:04:46,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:04:46,768 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:04:46,768 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:04:46,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i Unable to find full path for "g++" [2024-11-08 17:04:48,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:04:49,107 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:04:49,108 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i [2024-11-08 17:04:49,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/data/a05585762/73e2d61d89ca45f3bc1a05c6253fe432/FLAG64756e04d [2024-11-08 17:04:49,154 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/data/a05585762/73e2d61d89ca45f3bc1a05c6253fe432 [2024-11-08 17:04:49,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:04:49,159 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:04:49,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:04:49,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:04:49,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:04:49,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:04:49" (1/1) ... [2024-11-08 17:04:49,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6727d00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:49, skipping insertion in model container [2024-11-08 17:04:49,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:04:49" (1/1) ... [2024-11-08 17:04:49,232 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:04:49,791 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 17:04:49,841 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 17:04:49,848 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 17:04:49,859 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 17:04:49,869 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 17:04:49,927 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 17:04:49,928 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 17:04:49,931 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 17:04:49,937 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 17:04:49,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:04:49,971 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:04:50,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:04:50,216 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:04:50,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50 WrapperNode [2024-11-08 17:04:50,218 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:04:50,220 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:04:50,220 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:04:50,220 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:04:50,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,395 INFO L138 Inliner]: procedures = 207, calls = 222, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1259 [2024-11-08 17:04:50,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:04:50,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:04:50,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:04:50,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:04:50,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,527 INFO L175 MemorySlicer]: Split 206 memory accesses to 3 slices as follows [2, 170, 34]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 42, 4]. [2024-11-08 17:04:50,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,594 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:04:50,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:04:50,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:04:50,614 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:04:50,614 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (1/1) ... [2024-11-08 17:04:50,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:04:50,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:04:50,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:04:50,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:04:50,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-08 17:04:50,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-08 17:04:50,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-08 17:04:50,682 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-08 17:04:50,682 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-08 17:04:50,683 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-08 17:04:50,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:04:50,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:04:50,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:04:50,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:04:50,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:04:50,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:04:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:04:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 17:04:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:04:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:04:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 17:04:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:04:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:04:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:04:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:04:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:04:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:04:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:04:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 17:04:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:04:50,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:04:50,925 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:04:50,927 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:04:50,929 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:04:50,968 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:04:50,986 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:04:53,427 INFO L? ?]: Removed 1030 outVars from TransFormulas that were not future-live. [2024-11-08 17:04:53,427 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:04:53,462 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:04:53,463 INFO L316 CfgBuilder]: Removed 50 assume(true) statements. [2024-11-08 17:04:53,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:04:53 BoogieIcfgContainer [2024-11-08 17:04:53,463 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:04:53,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:04:53,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:04:53,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:04:53,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:04:49" (1/3) ... [2024-11-08 17:04:53,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29274478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:04:53, skipping insertion in model container [2024-11-08 17:04:53,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:04:50" (2/3) ... [2024-11-08 17:04:53,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29274478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:04:53, skipping insertion in model container [2024-11-08 17:04:53,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:04:53" (3/3) ... [2024-11-08 17:04:53,473 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test2-1.i [2024-11-08 17:04:53,491 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:04:53,491 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 420 error locations. [2024-11-08 17:04:53,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:04:53,594 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;@5680ef0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:04:53,595 INFO L334 AbstractCegarLoop]: Starting to check reachability of 420 error locations. [2024-11-08 17:04:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 1057 states, 635 states have (on average 2.0078740157480315) internal successors, (1275), 1052 states have internal predecessors, (1275), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:04:53,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:04:53,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:53,610 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:04:53,610 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr419ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:04:53,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1758814, now seen corresponding path program 1 times [2024-11-08 17:04:53,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:53,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263409913] [2024-11-08 17:04:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:53,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:04:53,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:53,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263409913] [2024-11-08 17:04:53,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263409913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:04:53,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:04:53,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:04:53,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379518077] [2024-11-08 17:04:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:04:53,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:04:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:53,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:04:53,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:04:53,994 INFO L87 Difference]: Start difference. First operand has 1057 states, 635 states have (on average 2.0078740157480315) internal successors, (1275), 1052 states have internal predecessors, (1275), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:55,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:55,313 INFO L93 Difference]: Finished difference Result 1355 states and 1614 transitions. [2024-11-08 17:04:55,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:04:55,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-08 17:04:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:55,344 INFO L225 Difference]: With dead ends: 1355 [2024-11-08 17:04:55,345 INFO L226 Difference]: Without dead ends: 1351 [2024-11-08 17:04:55,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:04:55,350 INFO L432 NwaCegarLoop]: 1106 mSDtfsCounter, 386 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:55,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 2672 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:04:55,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2024-11-08 17:04:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1266. [2024-11-08 17:04:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 850 states have (on average 1.8823529411764706) internal successors, (1600), 1261 states have internal predecessors, (1600), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:04:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1606 transitions. [2024-11-08 17:04:55,460 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1606 transitions. Word has length 4 [2024-11-08 17:04:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:55,461 INFO L471 AbstractCegarLoop]: Abstraction has 1266 states and 1606 transitions. [2024-11-08 17:04:55,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:55,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1606 transitions. [2024-11-08 17:04:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:04:55,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:55,463 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:04:55,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:04:55,464 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:04:55,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:55,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-08 17:04:55,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:55,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606577797] [2024-11-08 17:04:55,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:55,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:04:55,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606577797] [2024-11-08 17:04:55,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606577797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:04:55,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:04:55,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:04:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905720592] [2024-11-08 17:04:55,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:04:55,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:04:55,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:55,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:04:55,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:04:55,572 INFO L87 Difference]: Start difference. First operand 1266 states and 1606 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:56,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:56,189 INFO L93 Difference]: Finished difference Result 1263 states and 1598 transitions. [2024-11-08 17:04:56,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:04:56,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-08 17:04:56,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:56,195 INFO L225 Difference]: With dead ends: 1263 [2024-11-08 17:04:56,196 INFO L226 Difference]: Without dead ends: 1263 [2024-11-08 17:04:56,196 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 17:04:56,198 INFO L432 NwaCegarLoop]: 825 mSDtfsCounter, 1094 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:56,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 869 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:04:56,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2024-11-08 17:04:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1263. [2024-11-08 17:04:56,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 858 states have (on average 1.8554778554778555) internal successors, (1592), 1258 states have internal predecessors, (1592), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:04:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1598 transitions. [2024-11-08 17:04:56,235 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1598 transitions. Word has length 4 [2024-11-08 17:04:56,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:56,235 INFO L471 AbstractCegarLoop]: Abstraction has 1263 states and 1598 transitions. [2024-11-08 17:04:56,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:56,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1598 transitions. [2024-11-08 17:04:56,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:04:56,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:56,237 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:04:56,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:04:56,237 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:04:56,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-08 17:04:56,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:56,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190923616] [2024-11-08 17:04:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:56,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:04:56,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:56,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190923616] [2024-11-08 17:04:56,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190923616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:04:56,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:04:56,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:04:56,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213559632] [2024-11-08 17:04:56,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:04:56,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:04:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:56,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:04:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:04:56,332 INFO L87 Difference]: Start difference. First operand 1263 states and 1598 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:57,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:57,203 INFO L93 Difference]: Finished difference Result 1347 states and 1593 transitions. [2024-11-08 17:04:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:04:57,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-08 17:04:57,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:57,209 INFO L225 Difference]: With dead ends: 1347 [2024-11-08 17:04:57,210 INFO L226 Difference]: Without dead ends: 1347 [2024-11-08 17:04:57,210 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 17:04:57,212 INFO L432 NwaCegarLoop]: 1108 mSDtfsCounter, 384 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:57,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1890 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 17:04:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2024-11-08 17:04:57,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1262. [2024-11-08 17:04:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 858 states have (on average 1.8473193473193472) internal successors, (1585), 1257 states have internal predecessors, (1585), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:04:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1591 transitions. [2024-11-08 17:04:57,249 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1591 transitions. Word has length 4 [2024-11-08 17:04:57,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:57,249 INFO L471 AbstractCegarLoop]: Abstraction has 1262 states and 1591 transitions. [2024-11-08 17:04:57,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1591 transitions. [2024-11-08 17:04:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 17:04:57,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:57,250 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:57,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:04:57,251 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:04:57,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:57,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1021429073, now seen corresponding path program 1 times [2024-11-08 17:04:57,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:57,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159224152] [2024-11-08 17:04:57,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:57,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:04:57,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:57,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159224152] [2024-11-08 17:04:57,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159224152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:04:57,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:04:57,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:04:57,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404283908] [2024-11-08 17:04:57,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:04:57,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:04:57,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:57,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:04:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:04:57,489 INFO L87 Difference]: Start difference. First operand 1262 states and 1591 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 17:04:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:58,855 INFO L93 Difference]: Finished difference Result 1336 states and 1581 transitions. [2024-11-08 17:04:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:04:58,856 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 17:04:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:58,862 INFO L225 Difference]: With dead ends: 1336 [2024-11-08 17:04:58,863 INFO L226 Difference]: Without dead ends: 1336 [2024-11-08 17:04:58,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:04:58,864 INFO L432 NwaCegarLoop]: 849 mSDtfsCounter, 3345 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3345 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:58,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3345 Valid, 1126 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 17:04:58,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2024-11-08 17:04:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1251. [2024-11-08 17:04:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 858 states have (on average 1.8333333333333333) internal successors, (1573), 1246 states have internal predecessors, (1573), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:04:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1579 transitions. [2024-11-08 17:04:58,891 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1579 transitions. Word has length 8 [2024-11-08 17:04:58,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:58,892 INFO L471 AbstractCegarLoop]: Abstraction has 1251 states and 1579 transitions. [2024-11-08 17:04:58,892 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 17:04:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1579 transitions. [2024-11-08 17:04:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 17:04:58,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:58,893 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:58,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:04:58,893 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:04:58,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:58,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530194, now seen corresponding path program 1 times [2024-11-08 17:04:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:58,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546342099] [2024-11-08 17:04:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:58,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:04:58,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:58,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546342099] [2024-11-08 17:04:58,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546342099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:04:58,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:04:58,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:04:58,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078993702] [2024-11-08 17:04:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:04:58,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:04:58,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:04:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:04:58,948 INFO L87 Difference]: Start difference. First operand 1251 states and 1579 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:59,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:04:59,698 INFO L93 Difference]: Finished difference Result 1289 states and 1534 transitions. [2024-11-08 17:04:59,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:04:59,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 17:04:59,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:04:59,703 INFO L225 Difference]: With dead ends: 1289 [2024-11-08 17:04:59,703 INFO L226 Difference]: Without dead ends: 1289 [2024-11-08 17:04:59,703 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 17:04:59,705 INFO L432 NwaCegarLoop]: 1123 mSDtfsCounter, 1068 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:04:59,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1423 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:04:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2024-11-08 17:04:59,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1204. [2024-11-08 17:04:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 858 states have (on average 1.7785547785547786) internal successors, (1526), 1199 states have internal predecessors, (1526), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:04:59,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1532 transitions. [2024-11-08 17:04:59,732 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1532 transitions. Word has length 9 [2024-11-08 17:04:59,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:04:59,735 INFO L471 AbstractCegarLoop]: Abstraction has 1204 states and 1532 transitions. [2024-11-08 17:04:59,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:04:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1532 transitions. [2024-11-08 17:04:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 17:04:59,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:04:59,737 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:04:59,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:04:59,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:04:59,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:04:59,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530193, now seen corresponding path program 1 times [2024-11-08 17:04:59,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:04:59,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606492025] [2024-11-08 17:04:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:04:59,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:04:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:04:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:04:59,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:04:59,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606492025] [2024-11-08 17:04:59,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606492025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:04:59,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:04:59,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:04:59,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173073135] [2024-11-08 17:04:59,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:04:59,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:04:59,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:04:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:04:59,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:04:59,837 INFO L87 Difference]: Start difference. First operand 1204 states and 1532 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:00,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:00,592 INFO L93 Difference]: Finished difference Result 1491 states and 1897 transitions. [2024-11-08 17:05:00,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:05:00,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 17:05:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:00,597 INFO L225 Difference]: With dead ends: 1491 [2024-11-08 17:05:00,597 INFO L226 Difference]: Without dead ends: 1491 [2024-11-08 17:05:00,598 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 17:05:00,598 INFO L432 NwaCegarLoop]: 1256 mSDtfsCounter, 858 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:00,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1676 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:05:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2024-11-08 17:05:00,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1179. [2024-11-08 17:05:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 858 states have (on average 1.7494172494172495) internal successors, (1501), 1174 states have internal predecessors, (1501), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:00,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1507 transitions. [2024-11-08 17:05:00,624 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1507 transitions. Word has length 9 [2024-11-08 17:05:00,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:00,625 INFO L471 AbstractCegarLoop]: Abstraction has 1179 states and 1507 transitions. [2024-11-08 17:05:00,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:00,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1507 transitions. [2024-11-08 17:05:00,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 17:05:00,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:00,626 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:00,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:05:00,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:00,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:00,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1409972164, now seen corresponding path program 1 times [2024-11-08 17:05:00,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:00,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421813388] [2024-11-08 17:05:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:00,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:00,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:00,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421813388] [2024-11-08 17:05:00,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421813388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:00,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:00,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:05:00,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174575806] [2024-11-08 17:05:00,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:00,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:05:00,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:00,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:05:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:05:00,683 INFO L87 Difference]: Start difference. First operand 1179 states and 1507 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:01,417 INFO L93 Difference]: Finished difference Result 1254 states and 1613 transitions. [2024-11-08 17:05:01,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:05:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 17:05:01,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:01,422 INFO L225 Difference]: With dead ends: 1254 [2024-11-08 17:05:01,422 INFO L226 Difference]: Without dead ends: 1254 [2024-11-08 17:05:01,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:05:01,423 INFO L432 NwaCegarLoop]: 768 mSDtfsCounter, 1295 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:01,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 1412 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:05:01,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2024-11-08 17:05:01,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1156. [2024-11-08 17:05:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 858 states have (on average 1.6958041958041958) internal successors, (1455), 1151 states have internal predecessors, (1455), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1461 transitions. [2024-11-08 17:05:01,447 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1461 transitions. Word has length 15 [2024-11-08 17:05:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:01,447 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1461 transitions. [2024-11-08 17:05:01,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:01,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1461 transitions. [2024-11-08 17:05:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 17:05:01,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:01,448 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:01,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:05:01,448 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:01,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:01,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1409972163, now seen corresponding path program 1 times [2024-11-08 17:05:01,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:01,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732129051] [2024-11-08 17:05:01,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:01,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:01,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:01,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732129051] [2024-11-08 17:05:01,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732129051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:01,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:01,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:05:01,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805157195] [2024-11-08 17:05:01,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:01,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:05:01,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:05:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:05:01,504 INFO L87 Difference]: Start difference. First operand 1156 states and 1461 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:01,535 INFO L93 Difference]: Finished difference Result 1016 states and 1251 transitions. [2024-11-08 17:05:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:05:01,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 17:05:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:01,539 INFO L225 Difference]: With dead ends: 1016 [2024-11-08 17:05:01,539 INFO L226 Difference]: Without dead ends: 1016 [2024-11-08 17:05:01,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:05:01,540 INFO L432 NwaCegarLoop]: 977 mSDtfsCounter, 61 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:01,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1901 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:05:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2024-11-08 17:05:01,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1016. [2024-11-08 17:05:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 730 states have (on average 1.7054794520547945) internal successors, (1245), 1011 states have internal predecessors, (1245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1251 transitions. [2024-11-08 17:05:01,562 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1251 transitions. Word has length 15 [2024-11-08 17:05:01,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:01,562 INFO L471 AbstractCegarLoop]: Abstraction has 1016 states and 1251 transitions. [2024-11-08 17:05:01,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:01,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1251 transitions. [2024-11-08 17:05:01,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 17:05:01,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:01,563 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:01,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:05:01,563 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:01,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash -752693253, now seen corresponding path program 1 times [2024-11-08 17:05:01,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:01,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272674994] [2024-11-08 17:05:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:01,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:01,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272674994] [2024-11-08 17:05:01,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272674994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:01,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:01,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:05:01,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944145737] [2024-11-08 17:05:01,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:01,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:05:01,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:01,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:05:01,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:05:01,619 INFO L87 Difference]: Start difference. First operand 1016 states and 1251 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:01,684 INFO L93 Difference]: Finished difference Result 987 states and 1201 transitions. [2024-11-08 17:05:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:05:01,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-08 17:05:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:01,688 INFO L225 Difference]: With dead ends: 987 [2024-11-08 17:05:01,688 INFO L226 Difference]: Without dead ends: 987 [2024-11-08 17:05:01,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:05:01,689 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 41 mSDsluCounter, 1856 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:01,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2798 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:05:01,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2024-11-08 17:05:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 981. [2024-11-08 17:05:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 702 states have (on average 1.6937321937321936) internal successors, (1189), 976 states have internal predecessors, (1189), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:01,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1195 transitions. [2024-11-08 17:05:01,711 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1195 transitions. Word has length 16 [2024-11-08 17:05:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:01,711 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1195 transitions. [2024-11-08 17:05:01,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1195 transitions. [2024-11-08 17:05:01,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:05:01,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:01,712 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 17:05:01,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:05:01,713 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:01,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1271928384, now seen corresponding path program 1 times [2024-11-08 17:05:01,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:01,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299874057] [2024-11-08 17:05:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:01,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:01,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:01,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299874057] [2024-11-08 17:05:01,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299874057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:01,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:01,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:05:01,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545914579] [2024-11-08 17:05:01,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:01,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:05:01,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:01,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:05:01,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:05:01,798 INFO L87 Difference]: Start difference. First operand 981 states and 1195 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 17:05:02,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:02,555 INFO L93 Difference]: Finished difference Result 1050 states and 1250 transitions. [2024-11-08 17:05:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:05:02,555 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 17:05:02,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:02,559 INFO L225 Difference]: With dead ends: 1050 [2024-11-08 17:05:02,559 INFO L226 Difference]: Without dead ends: 1050 [2024-11-08 17:05:02,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:05:02,560 INFO L432 NwaCegarLoop]: 829 mSDtfsCounter, 1178 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:02,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 1659 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:05:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2024-11-08 17:05:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 958. [2024-11-08 17:05:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 702 states have (on average 1.660968660968661) internal successors, (1166), 953 states have internal predecessors, (1166), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1172 transitions. [2024-11-08 17:05:02,584 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1172 transitions. Word has length 20 [2024-11-08 17:05:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:02,584 INFO L471 AbstractCegarLoop]: Abstraction has 958 states and 1172 transitions. [2024-11-08 17:05:02,584 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 17:05:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1172 transitions. [2024-11-08 17:05:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:05:02,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:02,587 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 17:05:02,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:05:02,587 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:02,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1271928383, now seen corresponding path program 1 times [2024-11-08 17:05:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:02,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667517072] [2024-11-08 17:05:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:02,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:02,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:02,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667517072] [2024-11-08 17:05:02,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667517072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:02,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:02,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:05:02,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355634566] [2024-11-08 17:05:02,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:02,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:05:02,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:02,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:05:02,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:05:02,687 INFO L87 Difference]: Start difference. First operand 958 states and 1172 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 17:05:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:02,721 INFO L93 Difference]: Finished difference Result 882 states and 1067 transitions. [2024-11-08 17:05:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:05:02,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 17:05:02,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:02,725 INFO L225 Difference]: With dead ends: 882 [2024-11-08 17:05:02,725 INFO L226 Difference]: Without dead ends: 882 [2024-11-08 17:05:02,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:05:02,726 INFO L432 NwaCegarLoop]: 821 mSDtfsCounter, 61 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:02,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1589 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:05:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2024-11-08 17:05:02,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 882. [2024-11-08 17:05:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 638 states have (on average 1.6630094043887147) internal successors, (1061), 877 states have internal predecessors, (1061), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:02,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1067 transitions. [2024-11-08 17:05:02,747 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1067 transitions. Word has length 20 [2024-11-08 17:05:02,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:02,747 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1067 transitions. [2024-11-08 17:05:02,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 17:05:02,747 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1067 transitions. [2024-11-08 17:05:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 17:05:02,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:02,748 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:02,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:05:02,749 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:02,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash -768304611, now seen corresponding path program 1 times [2024-11-08 17:05:02,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:02,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159029560] [2024-11-08 17:05:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:02,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:02,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:02,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159029560] [2024-11-08 17:05:02,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159029560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:02,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:02,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:05:02,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877062839] [2024-11-08 17:05:02,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:02,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:05:02,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:02,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:05:02,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:05:02,815 INFO L87 Difference]: Start difference. First operand 882 states and 1067 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:02,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:02,876 INFO L93 Difference]: Finished difference Result 864 states and 1042 transitions. [2024-11-08 17:05:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:05:02,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 17:05:02,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:02,880 INFO L225 Difference]: With dead ends: 864 [2024-11-08 17:05:02,880 INFO L226 Difference]: Without dead ends: 864 [2024-11-08 17:05:02,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:05:02,881 INFO L432 NwaCegarLoop]: 786 mSDtfsCounter, 41 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:02,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2330 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:05:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2024-11-08 17:05:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 861. [2024-11-08 17:05:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 624 states have (on average 1.6554487179487178) internal successors, (1033), 856 states have internal predecessors, (1033), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1039 transitions. [2024-11-08 17:05:02,900 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1039 transitions. Word has length 21 [2024-11-08 17:05:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:02,900 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 1039 transitions. [2024-11-08 17:05:02,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1039 transitions. [2024-11-08 17:05:02,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 17:05:02,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:02,902 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:02,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 17:05:02,902 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr369REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:02,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:02,903 INFO L85 PathProgramCache]: Analyzing trace with hash -607542615, now seen corresponding path program 1 times [2024-11-08 17:05:02,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:02,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687547232] [2024-11-08 17:05:02,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:02,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:03,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687547232] [2024-11-08 17:05:03,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687547232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:03,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:03,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:05:03,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501148812] [2024-11-08 17:05:03,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:03,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:05:03,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:03,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:05:03,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:05:03,037 INFO L87 Difference]: Start difference. First operand 861 states and 1039 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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 17:05:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:03,720 INFO L93 Difference]: Finished difference Result 949 states and 1113 transitions. [2024-11-08 17:05:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:05:03,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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) Word has length 30 [2024-11-08 17:05:03,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:03,728 INFO L225 Difference]: With dead ends: 949 [2024-11-08 17:05:03,728 INFO L226 Difference]: Without dead ends: 949 [2024-11-08 17:05:03,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:05:03,729 INFO L432 NwaCegarLoop]: 755 mSDtfsCounter, 383 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:03,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 1755 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:05:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2024-11-08 17:05:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 861. [2024-11-08 17:05:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 624 states have (on average 1.6490384615384615) internal successors, (1029), 856 states have internal predecessors, (1029), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1035 transitions. [2024-11-08 17:05:03,752 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1035 transitions. Word has length 30 [2024-11-08 17:05:03,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:03,753 INFO L471 AbstractCegarLoop]: Abstraction has 861 states and 1035 transitions. [2024-11-08 17:05:03,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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 17:05:03,753 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1035 transitions. [2024-11-08 17:05:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 17:05:03,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:03,754 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:03,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 17:05:03,755 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:03,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1697897099, now seen corresponding path program 1 times [2024-11-08 17:05:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:03,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841642473] [2024-11-08 17:05:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:03,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:03,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841642473] [2024-11-08 17:05:03,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841642473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:03,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:03,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:05:03,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783448659] [2024-11-08 17:05:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:03,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:05:03,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:03,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:05:03,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:05:03,915 INFO L87 Difference]: Start difference. First operand 861 states and 1035 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:04,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:04,664 INFO L93 Difference]: Finished difference Result 1184 states and 1432 transitions. [2024-11-08 17:05:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:05:04,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 17:05:04,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:04,669 INFO L225 Difference]: With dead ends: 1184 [2024-11-08 17:05:04,669 INFO L226 Difference]: Without dead ends: 1184 [2024-11-08 17:05:04,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:05:04,670 INFO L432 NwaCegarLoop]: 891 mSDtfsCounter, 649 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:04,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1909 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:05:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-11-08 17:05:04,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 857. [2024-11-08 17:05:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 624 states have (on average 1.642628205128205) internal successors, (1025), 852 states have internal predecessors, (1025), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1031 transitions. [2024-11-08 17:05:04,689 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1031 transitions. Word has length 35 [2024-11-08 17:05:04,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:04,690 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1031 transitions. [2024-11-08 17:05:04,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:04,690 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1031 transitions. [2024-11-08 17:05:04,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:05:04,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:04,691 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:04,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 17:05:04,692 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:04,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:04,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1487707269, now seen corresponding path program 1 times [2024-11-08 17:05:04,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:04,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296832722] [2024-11-08 17:05:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:04,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:04,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:04,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296832722] [2024-11-08 17:05:04,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296832722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:04,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:04,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:05:04,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202933838] [2024-11-08 17:05:04,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:04,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:05:04,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:04,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:05:04,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:05:04,837 INFO L87 Difference]: Start difference. First operand 857 states and 1031 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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 17:05:04,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:04,900 INFO L93 Difference]: Finished difference Result 857 states and 1023 transitions. [2024-11-08 17:05:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:05:04,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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) Word has length 62 [2024-11-08 17:05:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:04,903 INFO L225 Difference]: With dead ends: 857 [2024-11-08 17:05:04,904 INFO L226 Difference]: Without dead ends: 857 [2024-11-08 17:05:04,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:05:04,906 INFO L432 NwaCegarLoop]: 781 mSDtfsCounter, 27 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:04,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2306 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:05:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-08 17:05:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 857. [2024-11-08 17:05:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 624 states have (on average 1.6298076923076923) internal successors, (1017), 852 states have internal predecessors, (1017), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1023 transitions. [2024-11-08 17:05:04,922 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1023 transitions. Word has length 62 [2024-11-08 17:05:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:04,922 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1023 transitions. [2024-11-08 17:05:04,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 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 17:05:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1023 transitions. [2024-11-08 17:05:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 17:05:04,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:04,924 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:04,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 17:05:04,924 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:04,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash -267693667, now seen corresponding path program 1 times [2024-11-08 17:05:04,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:04,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786706860] [2024-11-08 17:05:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:04,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:05,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:05,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:05,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786706860] [2024-11-08 17:05:05,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786706860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:05,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:05,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:05:05,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318309930] [2024-11-08 17:05:05,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:05,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:05:05,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:05,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:05:05,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:05:05,092 INFO L87 Difference]: Start difference. First operand 857 states and 1023 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 17:05:05,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:05,150 INFO L93 Difference]: Finished difference Result 857 states and 1019 transitions. [2024-11-08 17:05:05,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:05:05,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) Word has length 69 [2024-11-08 17:05:05,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:05,154 INFO L225 Difference]: With dead ends: 857 [2024-11-08 17:05:05,154 INFO L226 Difference]: Without dead ends: 857 [2024-11-08 17:05:05,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:05:05,155 INFO L432 NwaCegarLoop]: 777 mSDtfsCounter, 21 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:05,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2300 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:05:05,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-08 17:05:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 857. [2024-11-08 17:05:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 624 states have (on average 1.623397435897436) internal successors, (1013), 852 states have internal predecessors, (1013), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1019 transitions. [2024-11-08 17:05:05,172 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1019 transitions. Word has length 69 [2024-11-08 17:05:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:05,173 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1019 transitions. [2024-11-08 17:05:05,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 17:05:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1019 transitions. [2024-11-08 17:05:05,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 17:05:05,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:05,175 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:05,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 17:05:05,175 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:05,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:05,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1846394823, now seen corresponding path program 1 times [2024-11-08 17:05:05,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:05,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438770313] [2024-11-08 17:05:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:05,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:05,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:05,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438770313] [2024-11-08 17:05:05,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438770313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:05,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:05,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:05:05,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545937853] [2024-11-08 17:05:05,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:05,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:05:05,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:05:05,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:05:05,288 INFO L87 Difference]: Start difference. First operand 857 states and 1019 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:05,357 INFO L93 Difference]: Finished difference Result 1020 states and 1190 transitions. [2024-11-08 17:05:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:05:05,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-08 17:05:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:05,361 INFO L225 Difference]: With dead ends: 1020 [2024-11-08 17:05:05,361 INFO L226 Difference]: Without dead ends: 1020 [2024-11-08 17:05:05,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:05:05,362 INFO L432 NwaCegarLoop]: 798 mSDtfsCounter, 198 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:05,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1544 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:05:05,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2024-11-08 17:05:05,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1010. [2024-11-08 17:05:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 777 states have (on average 1.5186615186615187) internal successors, (1180), 1005 states have internal predecessors, (1180), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1186 transitions. [2024-11-08 17:05:05,381 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1186 transitions. Word has length 70 [2024-11-08 17:05:05,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:05,382 INFO L471 AbstractCegarLoop]: Abstraction has 1010 states and 1186 transitions. [2024-11-08 17:05:05,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:05,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1186 transitions. [2024-11-08 17:05:05,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 17:05:05,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:05,383 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:05,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 17:05:05,383 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:05,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:05,384 INFO L85 PathProgramCache]: Analyzing trace with hash 438438093, now seen corresponding path program 1 times [2024-11-08 17:05:05,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:05,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177334186] [2024-11-08 17:05:05,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:05,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:05,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:05,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177334186] [2024-11-08 17:05:05,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177334186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:05,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:05,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:05:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220736018] [2024-11-08 17:05:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:05,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:05:05,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:05:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:05:05,870 INFO L87 Difference]: Start difference. First operand 1010 states and 1186 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 17:05:06,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:06,045 INFO L93 Difference]: Finished difference Result 1484 states and 1692 transitions. [2024-11-08 17:05:06,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:05:06,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 76 [2024-11-08 17:05:06,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:06,051 INFO L225 Difference]: With dead ends: 1484 [2024-11-08 17:05:06,051 INFO L226 Difference]: Without dead ends: 1481 [2024-11-08 17:05:06,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:05:06,052 INFO L432 NwaCegarLoop]: 772 mSDtfsCounter, 733 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 3849 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:06,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 3849 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:05:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2024-11-08 17:05:06,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 911. [2024-11-08 17:05:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 678 states have (on average 1.551622418879056) internal successors, (1052), 906 states have internal predecessors, (1052), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1058 transitions. [2024-11-08 17:05:06,076 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1058 transitions. Word has length 76 [2024-11-08 17:05:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:06,076 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1058 transitions. [2024-11-08 17:05:06,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 17:05:06,077 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1058 transitions. [2024-11-08 17:05:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 17:05:06,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:06,078 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:06,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 17:05:06,078 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:06,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:06,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1698343876, now seen corresponding path program 1 times [2024-11-08 17:05:06,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:06,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142048121] [2024-11-08 17:05:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:06,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:06,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:06,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142048121] [2024-11-08 17:05:06,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142048121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:06,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:06,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:05:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067085227] [2024-11-08 17:05:06,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:06,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:05:06,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:05:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:05:06,430 INFO L87 Difference]: Start difference. First operand 911 states and 1058 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:07,166 INFO L93 Difference]: Finished difference Result 910 states and 1057 transitions. [2024-11-08 17:05:07,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:05:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-08 17:05:07,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:07,173 INFO L225 Difference]: With dead ends: 910 [2024-11-08 17:05:07,173 INFO L226 Difference]: Without dead ends: 910 [2024-11-08 17:05:07,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:05:07,175 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 2 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:07,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2299 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:05:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2024-11-08 17:05:07,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2024-11-08 17:05:07,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 678 states have (on average 1.5501474926253687) internal successors, (1051), 905 states have internal predecessors, (1051), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1057 transitions. [2024-11-08 17:05:07,191 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1057 transitions. Word has length 85 [2024-11-08 17:05:07,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:07,193 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1057 transitions. [2024-11-08 17:05:07,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:07,194 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1057 transitions. [2024-11-08 17:05:07,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 17:05:07,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:07,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:07,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 17:05:07,197 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:07,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:07,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1698343875, now seen corresponding path program 1 times [2024-11-08 17:05:07,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:07,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076147551] [2024-11-08 17:05:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:07,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:07,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076147551] [2024-11-08 17:05:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076147551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:07,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:07,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:05:07,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248869081] [2024-11-08 17:05:07,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:07,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:05:07,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:05:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:05:07,816 INFO L87 Difference]: Start difference. First operand 910 states and 1057 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:08,721 INFO L93 Difference]: Finished difference Result 909 states and 1056 transitions. [2024-11-08 17:05:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:05:08,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-08 17:05:08,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:08,724 INFO L225 Difference]: With dead ends: 909 [2024-11-08 17:05:08,725 INFO L226 Difference]: Without dead ends: 909 [2024-11-08 17:05:08,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:05:08,726 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 1 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:08,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2258 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 17:05:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2024-11-08 17:05:08,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2024-11-08 17:05:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 677 states have (on average 1.5509601181683899) internal successors, (1050), 904 states have internal predecessors, (1050), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1056 transitions. [2024-11-08 17:05:08,746 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1056 transitions. Word has length 85 [2024-11-08 17:05:08,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:08,746 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1056 transitions. [2024-11-08 17:05:08,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:05:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1056 transitions. [2024-11-08 17:05:08,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 17:05:08,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:08,748 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:08,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 17:05:08,748 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:08,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash -355007197, now seen corresponding path program 1 times [2024-11-08 17:05:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:08,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196690230] [2024-11-08 17:05:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:08,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:09,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:09,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:09,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196690230] [2024-11-08 17:05:09,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196690230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:09,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:09,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:05:09,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469110526] [2024-11-08 17:05:09,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:09,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:05:09,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:09,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:05:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:05:09,087 INFO L87 Difference]: Start difference. First operand 909 states and 1056 transitions. Second operand has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:10,145 INFO L93 Difference]: Finished difference Result 921 states and 1071 transitions. [2024-11-08 17:05:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:05:10,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2024-11-08 17:05:10,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:10,152 INFO L225 Difference]: With dead ends: 921 [2024-11-08 17:05:10,152 INFO L226 Difference]: Without dead ends: 921 [2024-11-08 17:05:10,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:05:10,153 INFO L432 NwaCegarLoop]: 780 mSDtfsCounter, 10 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:10,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3556 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:05:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-08 17:05:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 915. [2024-11-08 17:05:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 682 states have (on average 1.5498533724340176) internal successors, (1057), 909 states have internal predecessors, (1057), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 17:05:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1066 transitions. [2024-11-08 17:05:10,216 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1066 transitions. Word has length 93 [2024-11-08 17:05:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:10,216 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1066 transitions. [2024-11-08 17:05:10,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:10,217 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1066 transitions. [2024-11-08 17:05:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 17:05:10,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:10,218 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:10,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 17:05:10,218 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:10,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash -355007196, now seen corresponding path program 1 times [2024-11-08 17:05:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:10,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131321723] [2024-11-08 17:05:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:10,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:10,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:11,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:11,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:11,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131321723] [2024-11-08 17:05:11,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131321723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:11,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:11,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:05:11,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436308868] [2024-11-08 17:05:11,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:11,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:05:11,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:11,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:05:11,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:05:11,033 INFO L87 Difference]: Start difference. First operand 915 states and 1066 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:12,063 INFO L93 Difference]: Finished difference Result 915 states and 1065 transitions. [2024-11-08 17:05:12,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:05:12,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2024-11-08 17:05:12,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:12,067 INFO L225 Difference]: With dead ends: 915 [2024-11-08 17:05:12,069 INFO L226 Difference]: Without dead ends: 915 [2024-11-08 17:05:12,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:05:12,070 INFO L432 NwaCegarLoop]: 784 mSDtfsCounter, 5 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:12,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2922 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:05:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2024-11-08 17:05:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 915. [2024-11-08 17:05:12,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 682 states have (on average 1.5483870967741935) internal successors, (1056), 909 states have internal predecessors, (1056), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-08 17:05:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1065 transitions. [2024-11-08 17:05:12,087 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1065 transitions. Word has length 93 [2024-11-08 17:05:12,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:12,087 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1065 transitions. [2024-11-08 17:05:12,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:12,088 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1065 transitions. [2024-11-08 17:05:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 17:05:12,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:12,089 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:12,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 17:05:12,089 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:12,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1794296714, now seen corresponding path program 1 times [2024-11-08 17:05:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:12,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126993976] [2024-11-08 17:05:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:12,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:12,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:12,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126993976] [2024-11-08 17:05:12,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126993976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700883784] [2024-11-08 17:05:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:12,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:05:12,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:05:12,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:05:12,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:05:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:13,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 17:05:13,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:05:13,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:05:13,265 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-08 17:05:13,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-08 17:05:13,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:05:13,442 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 22 treesize of output 10 [2024-11-08 17:05:13,727 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:13,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:05:13,788 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 31 treesize of output 13 [2024-11-08 17:05:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:13,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:05:13,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700883784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:13,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:05:13,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-08 17:05:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283182413] [2024-11-08 17:05:13,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:05:13,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 17:05:13,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:13,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 17:05:13,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=321, Unknown=5, NotChecked=0, Total=380 [2024-11-08 17:05:13,929 INFO L87 Difference]: Start difference. First operand 915 states and 1065 transitions. Second operand has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:16,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:16,733 INFO L93 Difference]: Finished difference Result 922 states and 1072 transitions. [2024-11-08 17:05:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:05:16,733 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2024-11-08 17:05:16,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:16,736 INFO L225 Difference]: With dead ends: 922 [2024-11-08 17:05:16,737 INFO L226 Difference]: Without dead ends: 922 [2024-11-08 17:05:16,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=508, Unknown=5, NotChecked=0, Total=600 [2024-11-08 17:05:16,737 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 702 mSDsluCounter, 5259 mSDsCounter, 0 mSdLazyCounter, 3638 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 5752 SdHoareTripleChecker+Invalid, 3652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:16,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 5752 Invalid, 3652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3638 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 17:05:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-08 17:05:16,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 919. [2024-11-08 17:05:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 686 states have (on average 1.5451895043731778) internal successors, (1060), 912 states have internal predecessors, (1060), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:05:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1067 transitions. [2024-11-08 17:05:16,755 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1067 transitions. Word has length 94 [2024-11-08 17:05:16,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:16,755 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1067 transitions. [2024-11-08 17:05:16,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1067 transitions. [2024-11-08 17:05:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 17:05:16,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:16,757 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:16,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:05:16,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 17:05:16,958 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:16,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:16,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1794296713, now seen corresponding path program 1 times [2024-11-08 17:05:16,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:16,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110532595] [2024-11-08 17:05:16,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:16,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:17,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:18,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:18,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110532595] [2024-11-08 17:05:18,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110532595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:18,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833088299] [2024-11-08 17:05:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:18,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:05:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:05:18,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:05:18,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:05:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:18,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 17:05:18,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:05:18,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:05:18,493 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:05:18,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:05:18,502 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 17:05:18,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:05:18,537 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 17:05:18,643 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 22 treesize of output 10 [2024-11-08 17:05:18,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:05:18,780 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:18,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:05:18,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:05:18,834 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 31 treesize of output 13 [2024-11-08 17:05:18,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:05:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:18,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:05:18,975 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_799 (Array Int Int)) (v_ArrVal_798 (Array Int Int))) (<= (+ 20 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_798) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_799) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_798 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_798) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-08 17:05:18,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833088299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:18,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:05:18,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-08 17:05:18,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456515757] [2024-11-08 17:05:18,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:05:18,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 17:05:18,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:18,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 17:05:18,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=360, Unknown=1, NotChecked=38, Total=462 [2024-11-08 17:05:18,981 INFO L87 Difference]: Start difference. First operand 919 states and 1067 transitions. Second operand has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:21,807 INFO L93 Difference]: Finished difference Result 921 states and 1071 transitions. [2024-11-08 17:05:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:05:21,807 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2024-11-08 17:05:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:21,810 INFO L225 Difference]: With dead ends: 921 [2024-11-08 17:05:21,810 INFO L226 Difference]: Without dead ends: 921 [2024-11-08 17:05:21,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=550, Unknown=1, NotChecked=48, Total=702 [2024-11-08 17:05:21,812 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 702 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 4682 SdHoareTripleChecker+Invalid, 4001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:21,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 4682 Invalid, 4001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3984 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 17:05:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-08 17:05:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 912. [2024-11-08 17:05:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 681 states have (on average 1.5462555066079295) internal successors, (1053), 906 states have internal predecessors, (1053), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1059 transitions. [2024-11-08 17:05:21,829 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1059 transitions. Word has length 94 [2024-11-08 17:05:21,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:21,830 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 1059 transitions. [2024-11-08 17:05:21,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:21,830 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1059 transitions. [2024-11-08 17:05:21,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-08 17:05:21,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:21,831 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:21,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:05:22,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:05:22,035 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:22,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:22,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1809290499, now seen corresponding path program 1 times [2024-11-08 17:05:22,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:22,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744788001] [2024-11-08 17:05:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:22,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:22,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:22,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:22,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744788001] [2024-11-08 17:05:22,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744788001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:22,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:22,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-08 17:05:22,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011880737] [2024-11-08 17:05:22,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:22,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:05:22,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:22,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:05:22,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:05:22,781 INFO L87 Difference]: Start difference. First operand 912 states and 1059 transitions. Second operand has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:24,707 INFO L93 Difference]: Finished difference Result 925 states and 1075 transitions. [2024-11-08 17:05:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:05:24,708 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2024-11-08 17:05:24,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:24,711 INFO L225 Difference]: With dead ends: 925 [2024-11-08 17:05:24,711 INFO L226 Difference]: Without dead ends: 925 [2024-11-08 17:05:24,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:05:24,712 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 732 mSDsluCounter, 4303 mSDsCounter, 0 mSdLazyCounter, 3046 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 4796 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:24,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 4796 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3046 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 17:05:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-08 17:05:24,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 921. [2024-11-08 17:05:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 689 states have (on average 1.5428156748911466) internal successors, (1063), 914 states have internal predecessors, (1063), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:05:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1070 transitions. [2024-11-08 17:05:24,737 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1070 transitions. Word has length 96 [2024-11-08 17:05:24,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:24,741 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1070 transitions. [2024-11-08 17:05:24,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1070 transitions. [2024-11-08 17:05:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-08 17:05:24,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:24,744 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:24,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-08 17:05:24,744 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:24,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1809290498, now seen corresponding path program 1 times [2024-11-08 17:05:24,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:24,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892181702] [2024-11-08 17:05:24,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:24,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:25,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:25,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:25,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892181702] [2024-11-08 17:05:25,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892181702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:25,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:25,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-08 17:05:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497260048] [2024-11-08 17:05:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:25,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-08 17:05:25,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:25,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 17:05:25,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:05:25,761 INFO L87 Difference]: Start difference. First operand 921 states and 1070 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:28,012 INFO L93 Difference]: Finished difference Result 924 states and 1074 transitions. [2024-11-08 17:05:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:05:28,013 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2024-11-08 17:05:28,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:28,016 INFO L225 Difference]: With dead ends: 924 [2024-11-08 17:05:28,017 INFO L226 Difference]: Without dead ends: 924 [2024-11-08 17:05:28,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:05:28,018 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 728 mSDsluCounter, 2862 mSDsCounter, 0 mSdLazyCounter, 2963 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 3359 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:28,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 3359 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2963 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 17:05:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2024-11-08 17:05:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 921. [2024-11-08 17:05:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 689 states have (on average 1.5413642960812772) internal successors, (1062), 914 states have internal predecessors, (1062), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:05:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1069 transitions. [2024-11-08 17:05:28,034 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1069 transitions. Word has length 96 [2024-11-08 17:05:28,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:28,035 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1069 transitions. [2024-11-08 17:05:28,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:28,035 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1069 transitions. [2024-11-08 17:05:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 17:05:28,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:28,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:28,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-08 17:05:28,037 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:28,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:28,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1270191818, now seen corresponding path program 1 times [2024-11-08 17:05:28,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:28,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122042458] [2024-11-08 17:05:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:28,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:28,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:28,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:28,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122042458] [2024-11-08 17:05:28,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122042458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:28,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489785130] [2024-11-08 17:05:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:28,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:05:28,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:05:28,863 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:05:28,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:05:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:29,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:05:29,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:05:29,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:05:29,333 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-08 17:05:29,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-08 17:05:29,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:05:29,497 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 22 treesize of output 10 [2024-11-08 17:05:29,722 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:29,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:05:29,856 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:29,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:05:29,877 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 31 treesize of output 13 [2024-11-08 17:05:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:29,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:05:30,062 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1089 (Array Int Int)) (v_ArrVal_1086 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1089))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1086)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-08 17:05:30,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489785130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:30,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:05:30,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2024-11-08 17:05:30,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286007731] [2024-11-08 17:05:30,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:05:30,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 17:05:30,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:30,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 17:05:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=461, Unknown=15, NotChecked=44, Total=600 [2024-11-08 17:05:30,070 INFO L87 Difference]: Start difference. First operand 921 states and 1069 transitions. Second operand has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:33,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:33,268 INFO L93 Difference]: Finished difference Result 923 states and 1073 transitions. [2024-11-08 17:05:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:05:33,268 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 97 [2024-11-08 17:05:33,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:33,272 INFO L225 Difference]: With dead ends: 923 [2024-11-08 17:05:33,273 INFO L226 Difference]: Without dead ends: 923 [2024-11-08 17:05:33,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=637, Unknown=15, NotChecked=52, Total=812 [2024-11-08 17:05:33,274 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 697 mSDsluCounter, 6234 mSDsCounter, 0 mSdLazyCounter, 4271 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 6726 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:33,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 6726 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4271 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-08 17:05:33,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-08 17:05:33,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 920. [2024-11-08 17:05:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 689 states have (on average 1.5399129172714079) internal successors, (1061), 913 states have internal predecessors, (1061), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:05:33,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1068 transitions. [2024-11-08 17:05:33,291 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1068 transitions. Word has length 97 [2024-11-08 17:05:33,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:33,291 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1068 transitions. [2024-11-08 17:05:33,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:33,292 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1068 transitions. [2024-11-08 17:05:33,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 17:05:33,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:33,293 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:33,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:05:33,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 17:05:33,498 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:33,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1270191819, now seen corresponding path program 1 times [2024-11-08 17:05:33,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:33,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841985582] [2024-11-08 17:05:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:33,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:34,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:34,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:34,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841985582] [2024-11-08 17:05:34,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841985582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:34,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938739767] [2024-11-08 17:05:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:34,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:05:34,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:05:34,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:05:34,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:05:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:34,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-08 17:05:34,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:05:34,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:05:35,125 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 17:05:35,137 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:05:35,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:05:35,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:05:35,183 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 17:05:35,289 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 22 treesize of output 10 [2024-11-08 17:05:35,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:05:35,428 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:35,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:05:35,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:05:35,556 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:35,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:05:35,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:05:35,588 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 31 treesize of output 13 [2024-11-08 17:05:35,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:05:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:35,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:05:35,919 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1248 (Array Int Int)) (v_ArrVal_1247 (Array Int Int)) (v_ArrVal_1254 (Array Int Int)) (v_ArrVal_1253 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1254))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1253) .cse0 v_ArrVal_1247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1248) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1247 (Array Int Int)) (v_ArrVal_1254 (Array Int Int)) (v_ArrVal_1253 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1253) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1254) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4))))) is different from false [2024-11-08 17:05:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938739767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:35,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:05:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-08 17:05:35,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784266083] [2024-11-08 17:05:35,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:05:35,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:05:35,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:35,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:05:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=495, Unknown=24, NotChecked=46, Total=650 [2024-11-08 17:05:35,925 INFO L87 Difference]: Start difference. First operand 920 states and 1068 transitions. Second operand has 21 states, 18 states have (on average 8.555555555555555) internal successors, (154), 20 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:38,240 INFO L93 Difference]: Finished difference Result 922 states and 1072 transitions. [2024-11-08 17:05:38,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:05:38,241 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.555555555555555) internal successors, (154), 20 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 97 [2024-11-08 17:05:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:38,243 INFO L225 Difference]: With dead ends: 922 [2024-11-08 17:05:38,244 INFO L226 Difference]: Without dead ends: 922 [2024-11-08 17:05:38,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=768, Unknown=26, NotChecked=58, Total=992 [2024-11-08 17:05:38,245 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 699 mSDsluCounter, 3349 mSDsCounter, 0 mSdLazyCounter, 3258 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:38,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 3844 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 3258 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 17:05:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-08 17:05:38,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 910. [2024-11-08 17:05:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 681 states have (on average 1.5433186490455213) internal successors, (1051), 904 states have internal predecessors, (1051), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1057 transitions. [2024-11-08 17:05:38,262 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1057 transitions. Word has length 97 [2024-11-08 17:05:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:38,262 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1057 transitions. [2024-11-08 17:05:38,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.555555555555555) internal successors, (154), 20 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1057 transitions. [2024-11-08 17:05:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 17:05:38,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:38,264 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:38,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:05:38,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 17:05:38,465 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:38,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1266948618, now seen corresponding path program 1 times [2024-11-08 17:05:38,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:38,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809244564] [2024-11-08 17:05:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:38,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:39,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:39,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:39,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809244564] [2024-11-08 17:05:39,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809244564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:39,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:39,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-08 17:05:39,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118502719] [2024-11-08 17:05:39,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:39,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:05:39,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:39,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:05:39,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:05:39,296 INFO L87 Difference]: Start difference. First operand 910 states and 1057 transitions. Second operand has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:41,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:41,041 INFO L93 Difference]: Finished difference Result 926 states and 1076 transitions. [2024-11-08 17:05:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:05:41,041 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-08 17:05:41,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:41,044 INFO L225 Difference]: With dead ends: 926 [2024-11-08 17:05:41,044 INFO L226 Difference]: Without dead ends: 926 [2024-11-08 17:05:41,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:05:41,045 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 735 mSDsluCounter, 3818 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:41,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 4310 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 17:05:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-08 17:05:41,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 922. [2024-11-08 17:05:41,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 692 states have (on average 1.5375722543352601) internal successors, (1064), 915 states have internal predecessors, (1064), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:05:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1071 transitions. [2024-11-08 17:05:41,060 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1071 transitions. Word has length 99 [2024-11-08 17:05:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:41,060 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1071 transitions. [2024-11-08 17:05:41,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1071 transitions. [2024-11-08 17:05:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 17:05:41,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:41,062 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:41,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-08 17:05:41,062 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:41,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1266948619, now seen corresponding path program 1 times [2024-11-08 17:05:41,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:41,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501713679] [2024-11-08 17:05:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:41,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:42,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:42,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:42,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501713679] [2024-11-08 17:05:42,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501713679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:42,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:42,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-08 17:05:42,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784266723] [2024-11-08 17:05:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:42,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:05:42,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:05:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:05:42,165 INFO L87 Difference]: Start difference. First operand 922 states and 1071 transitions. Second operand has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:44,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:44,234 INFO L93 Difference]: Finished difference Result 925 states and 1075 transitions. [2024-11-08 17:05:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:05:44,235 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-08 17:05:44,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:44,237 INFO L225 Difference]: With dead ends: 925 [2024-11-08 17:05:44,237 INFO L226 Difference]: Without dead ends: 925 [2024-11-08 17:05:44,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:05:44,238 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 730 mSDsluCounter, 2934 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 3430 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:44,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 3430 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2824 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 17:05:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-08 17:05:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 922. [2024-11-08 17:05:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 692 states have (on average 1.5361271676300579) internal successors, (1063), 915 states have internal predecessors, (1063), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:05:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1070 transitions. [2024-11-08 17:05:44,256 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1070 transitions. Word has length 99 [2024-11-08 17:05:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:44,257 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1070 transitions. [2024-11-08 17:05:44,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1070 transitions. [2024-11-08 17:05:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 17:05:44,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:44,259 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:44,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-08 17:05:44,259 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:44,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1623211805, now seen corresponding path program 1 times [2024-11-08 17:05:44,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:44,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110540386] [2024-11-08 17:05:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:44,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:45,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:45,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110540386] [2024-11-08 17:05:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110540386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:45,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217359932] [2024-11-08 17:05:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:45,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:05:45,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:05:45,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:05:45,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:05:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:45,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 17:05:45,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:05:45,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:05:45,822 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-08 17:05:45,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-08 17:05:45,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:05:45,994 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 22 treesize of output 10 [2024-11-08 17:05:46,204 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:46,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:05:46,343 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:46,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:05:46,433 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:46,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:05:46,457 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 31 treesize of output 13 [2024-11-08 17:05:46,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:46,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:05:46,525 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1566 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1566) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-08 17:05:46,594 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1566 (Array Int Int)) (v_ArrVal_1565 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1565))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1566)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-08 17:05:46,603 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1566 (Array Int Int)) (v_ArrVal_1565 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1565))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1566)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-08 17:05:46,640 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1566 (Array Int Int)) (v_ArrVal_1565 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1569))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1565)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1566)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-08 17:05:46,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217359932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:46,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:05:46,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2024-11-08 17:05:46,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754231436] [2024-11-08 17:05:46,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:05:46,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:05:46,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:46,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:05:46,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=509, Unknown=10, NotChecked=196, Total=812 [2024-11-08 17:05:46,645 INFO L87 Difference]: Start difference. First operand 922 states and 1070 transitions. Second operand has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:49,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:49,970 INFO L93 Difference]: Finished difference Result 924 states and 1074 transitions. [2024-11-08 17:05:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:05:49,971 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-11-08 17:05:49,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:49,973 INFO L225 Difference]: With dead ends: 924 [2024-11-08 17:05:49,974 INFO L226 Difference]: Without dead ends: 924 [2024-11-08 17:05:49,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=693, Unknown=10, NotChecked=228, Total=1056 [2024-11-08 17:05:49,975 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 690 mSDsluCounter, 6705 mSDsCounter, 0 mSdLazyCounter, 4597 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 7196 SdHoareTripleChecker+Invalid, 4609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:49,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 7196 Invalid, 4609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4597 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-08 17:05:49,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2024-11-08 17:05:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 921. [2024-11-08 17:05:49,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 692 states have (on average 1.5346820809248556) internal successors, (1062), 914 states have internal predecessors, (1062), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:05:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1069 transitions. [2024-11-08 17:05:49,992 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1069 transitions. Word has length 100 [2024-11-08 17:05:49,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:49,992 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1069 transitions. [2024-11-08 17:05:49,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1069 transitions. [2024-11-08 17:05:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-08 17:05:49,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:49,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:50,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:05:50,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-08 17:05:50,199 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:50,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:50,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1623211806, now seen corresponding path program 1 times [2024-11-08 17:05:50,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:50,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811848326] [2024-11-08 17:05:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:50,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:51,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:51,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:51,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811848326] [2024-11-08 17:05:51,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811848326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:51,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202399507] [2024-11-08 17:05:51,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:51,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:05:51,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:05:51,571 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:05:51,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:05:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:51,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-08 17:05:51,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:05:51,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:05:52,088 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 17:05:52,098 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:05:52,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:05:52,135 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 19 treesize of output 1 [2024-11-08 17:05:52,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:05:52,270 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 22 treesize of output 10 [2024-11-08 17:05:52,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:05:52,434 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:52,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:05:52,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:05:52,563 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:52,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:05:52,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:05:52,672 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:05:52,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:05:52,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 22 [2024-11-08 17:05:52,755 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 31 treesize of output 13 [2024-11-08 17:05:52,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2024-11-08 17:05:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:52,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:05:53,106 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1739 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1739))) (or (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0) (forall ((v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1741 (Array Int Int)) (v_ArrVal_1740 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1740))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ 12 (select (select (store .cse0 .cse2 v_ArrVal_1742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1741) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) (forall ((v_ArrVal_1739 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1739))) (or (forall ((v_ArrVal_1742 (Array Int Int)) (v_ArrVal_1740 (Array Int Int))) (<= 0 (+ 8 (select (select (store .cse4 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1740) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (< (+ (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) 0)))))) is different from false [2024-11-08 17:05:53,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202399507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:05:53,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:05:53,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2024-11-08 17:05:53,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60692304] [2024-11-08 17:05:53,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:05:53,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:05:53,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:53,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:05:53,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=737, Unknown=23, NotChecked=56, Total=930 [2024-11-08 17:05:53,715 INFO L87 Difference]: Start difference. First operand 921 states and 1069 transitions. Second operand has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:57,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:57,223 INFO L93 Difference]: Finished difference Result 923 states and 1073 transitions. [2024-11-08 17:05:57,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 17:05:57,223 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-11-08 17:05:57,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:57,225 INFO L225 Difference]: With dead ends: 923 [2024-11-08 17:05:57,225 INFO L226 Difference]: Without dead ends: 923 [2024-11-08 17:05:57,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=191, Invalid=1121, Unknown=24, NotChecked=70, Total=1406 [2024-11-08 17:05:57,227 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 698 mSDsluCounter, 4501 mSDsCounter, 0 mSdLazyCounter, 4475 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 4995 SdHoareTripleChecker+Invalid, 4492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:57,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 4995 Invalid, 4492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4475 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 17:05:57,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-08 17:05:57,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 908. [2024-11-08 17:05:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 681 states have (on average 1.540381791483113) internal successors, (1049), 902 states have internal predecessors, (1049), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:05:57,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1055 transitions. [2024-11-08 17:05:57,242 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1055 transitions. Word has length 100 [2024-11-08 17:05:57,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:57,243 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1055 transitions. [2024-11-08 17:05:57,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:05:57,243 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1055 transitions. [2024-11-08 17:05:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:05:57,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:57,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:57,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:05:57,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-08 17:05:57,446 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:57,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:57,446 INFO L85 PathProgramCache]: Analyzing trace with hash -505671932, now seen corresponding path program 1 times [2024-11-08 17:05:57,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:57,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295114611] [2024-11-08 17:05:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:57,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:05:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:58,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:05:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:05:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:05:58,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:05:58,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295114611] [2024-11-08 17:05:58,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295114611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:05:58,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:05:58,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-08 17:05:58,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016606957] [2024-11-08 17:05:58,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:05:58,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:05:58,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:05:58,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:05:58,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:05:58,237 INFO L87 Difference]: Start difference. First operand 908 states and 1055 transitions. Second operand has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:59,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:05:59,931 INFO L93 Difference]: Finished difference Result 927 states and 1077 transitions. [2024-11-08 17:05:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:05:59,931 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-08 17:05:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:05:59,933 INFO L225 Difference]: With dead ends: 927 [2024-11-08 17:05:59,933 INFO L226 Difference]: Without dead ends: 927 [2024-11-08 17:05:59,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:05:59,934 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 737 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 2756 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 4355 SdHoareTripleChecker+Invalid, 2769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:05:59,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 4355 Invalid, 2769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2756 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 17:05:59,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-11-08 17:05:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 923. [2024-11-08 17:05:59,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 695 states have (on average 1.5323741007194245) internal successors, (1065), 916 states have internal predecessors, (1065), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:05:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1072 transitions. [2024-11-08 17:05:59,947 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1072 transitions. Word has length 102 [2024-11-08 17:05:59,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:05:59,948 INFO L471 AbstractCegarLoop]: Abstraction has 923 states and 1072 transitions. [2024-11-08 17:05:59,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:05:59,948 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1072 transitions. [2024-11-08 17:05:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-08 17:05:59,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:05:59,949 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:05:59,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-08 17:05:59,950 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:05:59,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:05:59,950 INFO L85 PathProgramCache]: Analyzing trace with hash -505671931, now seen corresponding path program 1 times [2024-11-08 17:05:59,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:05:59,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703711526] [2024-11-08 17:05:59,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:05:59,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:01,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:06:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:01,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:01,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703711526] [2024-11-08 17:06:01,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703711526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:01,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:01,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-08 17:06:01,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31085607] [2024-11-08 17:06:01,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:01,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 17:06:01,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:01,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 17:06:01,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:06:01,204 INFO L87 Difference]: Start difference. First operand 923 states and 1072 transitions. Second operand has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:06:03,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:03,501 INFO L93 Difference]: Finished difference Result 926 states and 1076 transitions. [2024-11-08 17:06:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 17:06:03,502 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-08 17:06:03,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:03,505 INFO L225 Difference]: With dead ends: 926 [2024-11-08 17:06:03,505 INFO L226 Difference]: Without dead ends: 926 [2024-11-08 17:06:03,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:06:03,506 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 730 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:06:03,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 3363 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 17:06:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-08 17:06:03,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 923. [2024-11-08 17:06:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 695 states have (on average 1.530935251798561) internal successors, (1064), 916 states have internal predecessors, (1064), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:06:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1071 transitions. [2024-11-08 17:06:03,522 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1071 transitions. Word has length 102 [2024-11-08 17:06:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:03,522 INFO L471 AbstractCegarLoop]: Abstraction has 923 states and 1071 transitions. [2024-11-08 17:06:03,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:06:03,522 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1071 transitions. [2024-11-08 17:06:03,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 17:06:03,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:03,524 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:03,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-08 17:06:03,524 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:06:03,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash 66743569, now seen corresponding path program 1 times [2024-11-08 17:06:03,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:03,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189933142] [2024-11-08 17:06:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:03,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:04,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:06:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:04,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189933142] [2024-11-08 17:06:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189933142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786028350] [2024-11-08 17:06:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:04,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:04,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:04,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:04,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:06:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:04,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 17:06:04,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:04,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:06:05,133 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-08 17:06:05,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-08 17:06:05,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:06:05,313 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 22 treesize of output 10 [2024-11-08 17:06:05,500 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:05,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:06:05,627 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:05,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:06:05,698 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:05,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:06:05,785 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:05,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:06:05,808 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 31 treesize of output 13 [2024-11-08 17:06:05,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:05,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:05,871 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2085 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2085) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-08 17:06:05,925 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2085 (Array Int Int)) (v_ArrVal_2084 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2084))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2085)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-08 17:06:05,984 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2083 (Array Int Int)) (v_ArrVal_2085 (Array Int Int)) (v_ArrVal_2084 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2083))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2084)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2085)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-08 17:06:05,994 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2083 (Array Int Int)) (v_ArrVal_2085 (Array Int Int)) (v_ArrVal_2084 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2083))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2084)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2085)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-08 17:06:06,036 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2083 (Array Int Int)) (v_ArrVal_2088 (Array Int Int)) (v_ArrVal_2085 (Array Int Int)) (v_ArrVal_2084 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2088))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2083)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2084)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2085)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-08 17:06:06,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786028350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:06,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:06:06,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 25 [2024-11-08 17:06:06,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501770678] [2024-11-08 17:06:06,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:06,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:06:06,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:06:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=636, Unknown=16, NotChecked=280, Total=1056 [2024-11-08 17:06:06,040 INFO L87 Difference]: Start difference. First operand 923 states and 1071 transitions. Second operand has 26 states, 23 states have (on average 7.217391304347826) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:06:09,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:09,136 INFO L93 Difference]: Finished difference Result 925 states and 1075 transitions. [2024-11-08 17:06:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 17:06:09,137 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 7.217391304347826) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-08 17:06:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:09,153 INFO L225 Difference]: With dead ends: 925 [2024-11-08 17:06:09,153 INFO L226 Difference]: Without dead ends: 925 [2024-11-08 17:06:09,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=843, Unknown=16, NotChecked=320, Total=1332 [2024-11-08 17:06:09,154 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 685 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 5286 SdHoareTripleChecker+Invalid, 3423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:06:09,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 5286 Invalid, 3423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 17:06:09,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-08 17:06:09,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 922. [2024-11-08 17:06:09,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 695 states have (on average 1.5294964028776978) internal successors, (1063), 915 states have internal predecessors, (1063), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:06:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1070 transitions. [2024-11-08 17:06:09,169 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1070 transitions. Word has length 103 [2024-11-08 17:06:09,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:09,170 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1070 transitions. [2024-11-08 17:06:09,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 7.217391304347826) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:06:09,170 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1070 transitions. [2024-11-08 17:06:09,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 17:06:09,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:09,171 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:09,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:06:09,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 17:06:09,376 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:06:09,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash 66743570, now seen corresponding path program 1 times [2024-11-08 17:06:09,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:09,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66723305] [2024-11-08 17:06:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:09,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:10,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:06:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:10,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:10,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66723305] [2024-11-08 17:06:10,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66723305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:10,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971818058] [2024-11-08 17:06:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:10,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:10,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:10,845 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:10,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:06:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:11,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 17:06:11,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:11,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:06:11,362 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:06:11,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:06:11,371 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 17:06:11,382 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 17:06:11,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:06:11,489 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 22 treesize of output 10 [2024-11-08 17:06:11,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:06:11,635 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:11,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:06:11,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:06:11,753 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:11,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:06:11,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:06:11,841 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:11,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:06:11,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:06:11,955 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:11,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:06:11,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:06:11,991 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 31 treesize of output 13 [2024-11-08 17:06:11,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:06:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:12,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:12,276 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2275 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2272))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2273) .cse0 v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_2275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2273) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))))) is different from false [2024-11-08 17:06:12,428 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2270 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2271))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2270) .cse0 v_ArrVal_2273) (select (select (store .cse1 .cse0 v_ArrVal_2272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2274))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 20))) (forall ((v_ArrVal_2270 (Array Int Int)) (v_ArrVal_2275 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2271))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_2272))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2270) .cse3 v_ArrVal_2273) .cse4 v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_2275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2024-11-08 17:06:14,254 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2281 (Array Int Int)) (v_ArrVal_2270 (Array Int Int)) (v_ArrVal_2280 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2280))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2271))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2281) .cse0 v_ArrVal_2270) .cse1 v_ArrVal_2273) (select (select (store .cse2 .cse1 v_ArrVal_2272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2274))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))) (forall ((v_ArrVal_2281 (Array Int Int)) (v_ArrVal_2270 (Array Int Int)) (v_ArrVal_2280 (Array Int Int)) (v_ArrVal_2275 (Array Int Int)) (v_ArrVal_2274 (Array Int Int)) (v_ArrVal_2273 (Array Int Int)) (v_ArrVal_2272 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2280))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2271))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2272))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2281) .cse5 v_ArrVal_2270) .cse6 v_ArrVal_2273) .cse7 v_ArrVal_2274) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_2275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))) is different from false [2024-11-08 17:06:14,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971818058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:14,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:06:14,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 21 [2024-11-08 17:06:14,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380970194] [2024-11-08 17:06:14,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:14,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 17:06:14,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:14,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 17:06:14,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=599, Unknown=44, NotChecked=162, Total=930 [2024-11-08 17:06:14,260 INFO L87 Difference]: Start difference. First operand 922 states and 1070 transitions. Second operand has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:06:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:19,900 INFO L93 Difference]: Finished difference Result 924 states and 1074 transitions. [2024-11-08 17:06:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:06:19,900 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-08 17:06:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:19,903 INFO L225 Difference]: With dead ends: 924 [2024-11-08 17:06:19,903 INFO L226 Difference]: Without dead ends: 924 [2024-11-08 17:06:19,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=206, Invalid=1020, Unknown=46, NotChecked=210, Total=1482 [2024-11-08 17:06:19,905 INFO L432 NwaCegarLoop]: 493 mSDtfsCounter, 693 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 3663 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 4230 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:06:19,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 4230 Invalid, 3678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3663 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-08 17:06:19,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2024-11-08 17:06:19,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 906. [2024-11-08 17:06:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 681 states have (on average 1.5374449339207048) internal successors, (1047), 900 states have internal predecessors, (1047), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:06:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1053 transitions. [2024-11-08 17:06:19,920 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1053 transitions. Word has length 103 [2024-11-08 17:06:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:19,920 INFO L471 AbstractCegarLoop]: Abstraction has 906 states and 1053 transitions. [2024-11-08 17:06:19,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.263157894736842) internal successors, (157), 21 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:06:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1053 transitions. [2024-11-08 17:06:19,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 17:06:19,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:19,921 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:19,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 17:06:20,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 17:06:20,122 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:06:20,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1755973062, now seen corresponding path program 1 times [2024-11-08 17:06:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226922249] [2024-11-08 17:06:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:20,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:06:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:21,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:21,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226922249] [2024-11-08 17:06:21,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226922249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:21,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:21,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-08 17:06:21,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392579824] [2024-11-08 17:06:21,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:21,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 17:06:21,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 17:06:21,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:06:21,391 INFO L87 Difference]: Start difference. First operand 906 states and 1053 transitions. Second operand has 17 states, 15 states have (on average 6.933333333333334) internal successors, (104), 16 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:06:25,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:25,898 INFO L93 Difference]: Finished difference Result 929 states and 1079 transitions. [2024-11-08 17:06:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 17:06:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.933333333333334) internal successors, (104), 16 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2024-11-08 17:06:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:25,904 INFO L225 Difference]: With dead ends: 929 [2024-11-08 17:06:25,904 INFO L226 Difference]: Without dead ends: 929 [2024-11-08 17:06:25,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:06:25,907 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 740 mSDsluCounter, 4313 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 4803 SdHoareTripleChecker+Invalid, 3117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:06:25,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 4803 Invalid, 3117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-08 17:06:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2024-11-08 17:06:25,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 925. [2024-11-08 17:06:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 699 states have (on average 1.5264663805436338) internal successors, (1067), 918 states have internal predecessors, (1067), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:06:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1074 transitions. [2024-11-08 17:06:25,923 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1074 transitions. Word has length 106 [2024-11-08 17:06:25,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:25,924 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1074 transitions. [2024-11-08 17:06:25,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.933333333333334) internal successors, (104), 16 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:06:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1074 transitions. [2024-11-08 17:06:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-08 17:06:25,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:25,926 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:25,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-08 17:06:25,926 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:06:25,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:25,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1755973063, now seen corresponding path program 1 times [2024-11-08 17:06:25,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:25,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305660497] [2024-11-08 17:06:25,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:25,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:27,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:06:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:27,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:27,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305660497] [2024-11-08 17:06:27,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305660497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:06:27,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:06:27,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-08 17:06:27,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239983131] [2024-11-08 17:06:27,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:06:27,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 17:06:27,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:27,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 17:06:27,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:06:27,833 INFO L87 Difference]: Start difference. First operand 925 states and 1074 transitions. Second operand has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:06:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:33,922 INFO L93 Difference]: Finished difference Result 928 states and 1078 transitions. [2024-11-08 17:06:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 17:06:33,922 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 106 [2024-11-08 17:06:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:33,924 INFO L225 Difference]: With dead ends: 928 [2024-11-08 17:06:33,924 INFO L226 Difference]: Without dead ends: 928 [2024-11-08 17:06:33,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:06:33,925 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 735 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 4368 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 5028 SdHoareTripleChecker+Invalid, 4386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:06:33,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 5028 Invalid, 4386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 4368 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-08 17:06:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2024-11-08 17:06:33,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 925. [2024-11-08 17:06:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 699 states have (on average 1.5250357653791131) internal successors, (1066), 918 states have internal predecessors, (1066), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:06:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1073 transitions. [2024-11-08 17:06:33,940 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1073 transitions. Word has length 106 [2024-11-08 17:06:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:33,940 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1073 transitions. [2024-11-08 17:06:33,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:06:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1073 transitions. [2024-11-08 17:06:33,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 17:06:33,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:33,942 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:33,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-08 17:06:33,943 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:06:33,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:33,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2032178515, now seen corresponding path program 1 times [2024-11-08 17:06:33,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:33,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48734669] [2024-11-08 17:06:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:33,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:35,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:06:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:35,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:35,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48734669] [2024-11-08 17:06:35,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48734669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:35,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891844727] [2024-11-08 17:06:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:35,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:35,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:35,233 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:35,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:06:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:35,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 17:06:35,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:35,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:06:35,844 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-08 17:06:35,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-08 17:06:35,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:06:36,072 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 22 treesize of output 10 [2024-11-08 17:06:36,373 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:36,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:06:36,544 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:36,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:06:36,655 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:36,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:06:36,786 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:36,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:06:36,900 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:36,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:06:36,927 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 31 treesize of output 13 [2024-11-08 17:06:37,059 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-08 17:06:37,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-08 17:06:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:37,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:38,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891844727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:38,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:06:38,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 26 [2024-11-08 17:06:38,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586652671] [2024-11-08 17:06:38,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:06:38,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 17:06:38,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:06:38,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 17:06:38,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1169, Unknown=46, NotChecked=0, Total=1406 [2024-11-08 17:06:38,530 INFO L87 Difference]: Start difference. First operand 925 states and 1073 transitions. Second operand has 27 states, 24 states have (on average 7.25) internal successors, (174), 26 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:06:44,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:06:44,735 INFO L93 Difference]: Finished difference Result 927 states and 1077 transitions. [2024-11-08 17:06:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 17:06:44,736 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 7.25) internal successors, (174), 26 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2024-11-08 17:06:44,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:06:44,738 INFO L225 Difference]: With dead ends: 927 [2024-11-08 17:06:44,738 INFO L226 Difference]: Without dead ends: 927 [2024-11-08 17:06:44,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=223, Invalid=1453, Unknown=46, NotChecked=0, Total=1722 [2024-11-08 17:06:44,739 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 678 mSDsluCounter, 6192 mSDsCounter, 0 mSdLazyCounter, 4302 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 6681 SdHoareTripleChecker+Invalid, 4315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:06:44,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 6681 Invalid, 4315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 4302 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-08 17:06:44,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-11-08 17:06:44,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 924. [2024-11-08 17:06:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 699 states have (on average 1.5236051502145922) internal successors, (1065), 917 states have internal predecessors, (1065), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:06:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1072 transitions. [2024-11-08 17:06:44,756 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1072 transitions. Word has length 107 [2024-11-08 17:06:44,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:06:44,757 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1072 transitions. [2024-11-08 17:06:44,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 7.25) internal successors, (174), 26 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:06:44,757 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1072 transitions. [2024-11-08 17:06:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 17:06:44,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:06:44,758 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:06:44,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 17:06:44,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-08 17:06:44,959 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:06:44,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:06:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2032178516, now seen corresponding path program 1 times [2024-11-08 17:06:44,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:06:44,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667072515] [2024-11-08 17:06:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:06:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:46,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:06:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:46,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:06:46,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667072515] [2024-11-08 17:06:46,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667072515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:06:46,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67992948] [2024-11-08 17:06:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:06:46,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:06:46,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:06:46,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:06:46,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:06:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:06:47,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-08 17:06:47,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:06:47,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:06:47,676 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 17:06:47,717 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-08 17:06:47,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-08 17:06:47,824 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 17:06:47,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:06:48,076 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 33 treesize of output 15 [2024-11-08 17:06:48,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:06:48,492 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:48,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-08 17:06:48,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:06:48,730 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:48,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-08 17:06:48,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:06:48,908 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:48,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-08 17:06:48,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:06:49,081 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:49,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-08 17:06:49,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:06:49,282 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:06:49,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-08 17:06:49,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:06:49,333 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 42 treesize of output 18 [2024-11-08 17:06:49,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:06:49,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:06:49,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:06:49,480 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-08 17:06:49,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-08 17:06:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:06:49,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:06:50,448 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2858 (Array Int Int)) (v_ArrVal_2861 (Array Int Int)) (v_ArrVal_2860 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int) (v_ArrVal_2859 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)) (forall ((v_ArrVal_2862 Int)) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2858))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2859) .cse0 v_ArrVal_2861) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_7| v_ArrVal_2862) (select (select (store .cse2 .cse0 v_ArrVal_2860) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) (or (forall ((v_ArrVal_2858 (Array Int Int)) (v_ArrVal_2861 (Array Int Int)) (v_ArrVal_2859 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2859) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2858) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2861) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)))))) is different from false [2024-11-08 17:06:51,800 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((v_ArrVal_2858 (Array Int Int)) (v_ArrVal_2857 (Array Int Int)) (v_ArrVal_2856 (Array Int Int)) (v_ArrVal_2855 (Array Int Int)) (v_ArrVal_2854 (Array Int Int)) (v_ArrVal_2861 (Array Int Int)) (v_ArrVal_2859 (Array Int Int))) (< 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2855))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2856))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2854) .cse0 v_ArrVal_2857) .cse1 v_ArrVal_2859) (select (select (store .cse2 .cse1 v_ArrVal_2858) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2861))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)))) (forall ((v_ArrVal_2858 (Array Int Int)) (v_ArrVal_2857 (Array Int Int)) (v_ArrVal_2856 (Array Int Int)) (v_ArrVal_2855 (Array Int Int)) (v_ArrVal_2854 (Array Int Int)) (v_ArrVal_2861 (Array Int Int)) (v_ArrVal_2860 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int) (v_ArrVal_2859 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)) (forall ((v_ArrVal_2862 Int)) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2855))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2856))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2858))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2854) .cse5 v_ArrVal_2857) .cse6 v_ArrVal_2859) .cse7 v_ArrVal_2861) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_7| v_ArrVal_2862) (select (select (store .cse8 .cse7 v_ArrVal_2860) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))))) is different from false [2024-11-08 17:07:05,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67992948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:07:05,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:07:05,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 29 [2024-11-08 17:07:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283215921] [2024-11-08 17:07:05,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:07:05,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 17:07:05,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 17:07:05,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1351, Unknown=40, NotChecked=154, Total=1722 [2024-11-08 17:07:05,677 INFO L87 Difference]: Start difference. First operand 924 states and 1072 transitions. Second operand has 30 states, 27 states have (on average 6.444444444444445) internal successors, (174), 29 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:07:39,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:39,551 INFO L93 Difference]: Finished difference Result 926 states and 1076 transitions. [2024-11-08 17:07:39,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 17:07:39,552 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 6.444444444444445) internal successors, (174), 29 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2024-11-08 17:07:39,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:39,554 INFO L225 Difference]: With dead ends: 926 [2024-11-08 17:07:39,554 INFO L226 Difference]: Without dead ends: 926 [2024-11-08 17:07:39,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=309, Invalid=2209, Unknown=40, NotChecked=198, Total=2756 [2024-11-08 17:07:39,555 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 691 mSDsluCounter, 5330 mSDsCounter, 0 mSdLazyCounter, 5129 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 5819 SdHoareTripleChecker+Invalid, 5153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:39,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 5819 Invalid, 5153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 5129 Invalid, 0 Unknown, 0 Unchecked, 30.9s Time] [2024-11-08 17:07:39,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-08 17:07:39,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 904. [2024-11-08 17:07:39,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 681 states have (on average 1.5345080763582966) internal successors, (1045), 898 states have internal predecessors, (1045), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:07:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1051 transitions. [2024-11-08 17:07:39,569 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1051 transitions. Word has length 107 [2024-11-08 17:07:39,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:39,569 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1051 transitions. [2024-11-08 17:07:39,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 6.444444444444445) internal successors, (174), 29 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:07:39,570 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1051 transitions. [2024-11-08 17:07:39,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-08 17:07:39,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:39,571 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:39,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 17:07:39,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-08 17:07:39,772 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr100REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:07:39,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:39,773 INFO L85 PathProgramCache]: Analyzing trace with hash -507513865, now seen corresponding path program 1 times [2024-11-08 17:07:39,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:39,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374828139] [2024-11-08 17:07:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:39,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:40,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:07:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:07:40,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:40,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374828139] [2024-11-08 17:07:40,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374828139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:40,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:40,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 17:07:40,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389831581] [2024-11-08 17:07:40,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:40,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:07:40,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:07:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:07:40,682 INFO L87 Difference]: Start difference. First operand 904 states and 1051 transitions. Second operand has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:07:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:07:46,942 INFO L93 Difference]: Finished difference Result 909 states and 1059 transitions. [2024-11-08 17:07:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:07:46,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2024-11-08 17:07:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:07:46,945 INFO L225 Difference]: With dead ends: 909 [2024-11-08 17:07:46,945 INFO L226 Difference]: Without dead ends: 909 [2024-11-08 17:07:46,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:07:46,946 INFO L432 NwaCegarLoop]: 774 mSDtfsCounter, 6 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3655 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:07:46,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3655 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-08 17:07:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2024-11-08 17:07:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 903. [2024-11-08 17:07:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 681 states have (on average 1.5330396475770924) internal successors, (1044), 897 states have internal predecessors, (1044), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:07:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1050 transitions. [2024-11-08 17:07:46,963 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1050 transitions. Word has length 109 [2024-11-08 17:07:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:07:46,964 INFO L471 AbstractCegarLoop]: Abstraction has 903 states and 1050 transitions. [2024-11-08 17:07:46,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:07:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1050 transitions. [2024-11-08 17:07:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-08 17:07:46,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:07:46,966 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:07:46,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-08 17:07:46,966 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr101REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:07:46,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:07:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash -507513864, now seen corresponding path program 1 times [2024-11-08 17:07:46,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:07:46,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834209521] [2024-11-08 17:07:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:07:46,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:07:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:51,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:07:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:07:51,584 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 17:07:51,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:07:51,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834209521] [2024-11-08 17:07:51,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834209521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:07:51,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:07:51,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-08 17:07:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111968590] [2024-11-08 17:07:51,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:07:51,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 17:07:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:07:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 17:07:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-08 17:07:51,588 INFO L87 Difference]: Start difference. First operand 903 states and 1050 transitions. Second operand has 19 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:08:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:08:22,829 INFO L93 Difference]: Finished difference Result 928 states and 1078 transitions. [2024-11-08 17:08:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 17:08:22,830 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2024-11-08 17:08:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:08:22,831 INFO L225 Difference]: With dead ends: 928 [2024-11-08 17:08:22,831 INFO L226 Difference]: Without dead ends: 928 [2024-11-08 17:08:22,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2024-11-08 17:08:22,832 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 712 mSDsluCounter, 4847 mSDsCounter, 0 mSdLazyCounter, 4883 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 5337 SdHoareTripleChecker+Invalid, 4897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:08:22,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 5337 Invalid, 4897 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 4883 Invalid, 0 Unknown, 0 Unchecked, 29.4s Time] [2024-11-08 17:08:22,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2024-11-08 17:08:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 925. [2024-11-08 17:08:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 702 states have (on average 1.5185185185185186) internal successors, (1066), 918 states have internal predecessors, (1066), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:08:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1073 transitions. [2024-11-08 17:08:22,844 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1073 transitions. Word has length 109 [2024-11-08 17:08:22,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:08:22,845 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1073 transitions. [2024-11-08 17:08:22,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.294117647058823) internal successors, (107), 18 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:08:22,845 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1073 transitions. [2024-11-08 17:08:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-08 17:08:22,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:08:22,846 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:08:22,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-08 17:08:22,846 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr101REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:08:22,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:08:22,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1228202677, now seen corresponding path program 1 times [2024-11-08 17:08:22,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:08:22,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711861689] [2024-11-08 17:08:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:22,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:08:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:27,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:08:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:27,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:08:27,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711861689] [2024-11-08 17:08:27,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711861689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:08:27,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944840912] [2024-11-08 17:08:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:08:27,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:08:27,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:08:27,594 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:08:27,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:08:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:08:27,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-08 17:08:27,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:08:28,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:08:28,913 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 17:08:29,051 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-08 17:08:29,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-08 17:08:29,333 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 17:08:29,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:08:30,169 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 33 treesize of output 15 [2024-11-08 17:08:30,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:08:31,274 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:08:31,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-08 17:08:31,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:08:32,356 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:08:32,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-08 17:08:32,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:08:33,116 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:08:33,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-08 17:08:33,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:08:33,699 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:08:33,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-08 17:08:33,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:08:34,304 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:08:34,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-08 17:08:34,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:08:34,993 INFO L349 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2024-11-08 17:08:34,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2024-11-08 17:08:35,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-08 17:08:35,393 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:08:35,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:08:35,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:08:35,682 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 31 treesize of output 13 [2024-11-08 17:08:35,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:08:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:08:35,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:08:36,482 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3272 (Array Int Int)) (v_ArrVal_3273 (Array Int Int))) (<= (+ 44 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3273 (Array Int Int))) (<= 0 (+ 40 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-08 17:08:37,511 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_9| Int) (v_ArrVal_3269 (Array Int Int)) (v_ArrVal_3270 (Array Int Int))) (or (forall ((v_ArrVal_3272 (Array Int Int)) (v_ArrVal_3271 Int) (v_ArrVal_3273 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3270))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ 44 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3269) .cse0 v_ArrVal_3273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_9| v_ArrVal_3271) (select (select (store .cse2 .cse0 v_ArrVal_3272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_9|) 0)))) (or (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_9| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_9|) 0))) (forall ((v_ArrVal_3273 (Array Int Int)) (v_ArrVal_3269 (Array Int Int)) (v_ArrVal_3270 (Array Int Int))) (<= 0 (+ 40 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3269) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-08 17:08:40,463 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (or (forall ((v_ArrVal_3273 (Array Int Int)) (v_ArrVal_3265 (Array Int Int)) (v_ArrVal_3266 (Array Int Int)) (v_ArrVal_3267 (Array Int Int)) (v_ArrVal_3268 (Array Int Int)) (v_ArrVal_3269 (Array Int Int)) (v_ArrVal_3270 (Array Int Int))) (<= 0 (+ 40 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3266))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_3268))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3265) .cse1 v_ArrVal_3267) .cse2 v_ArrVal_3269) (select (select (store .cse3 .cse2 v_ArrVal_3270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3273))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_9| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_9|) 0)))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_9| Int) (v_ArrVal_3265 (Array Int Int)) (v_ArrVal_3266 (Array Int Int)) (v_ArrVal_3267 (Array Int Int)) (v_ArrVal_3268 (Array Int Int)) (v_ArrVal_3269 (Array Int Int)) (v_ArrVal_3270 (Array Int Int))) (or (forall ((v_ArrVal_3272 (Array Int Int)) (v_ArrVal_3271 Int) (v_ArrVal_3273 (Array Int Int))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3266))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_3268))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_3270))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (<= (+ 44 (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3265) .cse6 v_ArrVal_3267) .cse7 v_ArrVal_3269) .cse8 v_ArrVal_3273) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_9| v_ArrVal_3271) (select (select (store .cse9 .cse8 v_ArrVal_3272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_9|) 0))))))) is different from false [2024-11-08 17:09:48,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944840912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:09:48,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:09:48,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 32 [2024-11-08 17:09:48,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554494738] [2024-11-08 17:09:48,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:09:48,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 17:09:48,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:09:48,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 17:09:48,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=1598, Unknown=71, NotChecked=258, Total=2162 [2024-11-08 17:09:48,389 INFO L87 Difference]: Start difference. First operand 925 states and 1073 transitions. Second operand has 33 states, 30 states have (on average 6.0) internal successors, (180), 32 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:11:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:11:33,362 INFO L93 Difference]: Finished difference Result 927 states and 1077 transitions. [2024-11-08 17:11:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 17:11:33,363 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 6.0) internal successors, (180), 32 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2024-11-08 17:11:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:11:33,364 INFO L225 Difference]: With dead ends: 927 [2024-11-08 17:11:33,364 INFO L226 Difference]: Without dead ends: 927 [2024-11-08 17:11:33,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 85.9s TimeCoverageRelationStatistics Valid=391, Invalid=2628, Unknown=73, NotChecked=330, Total=3422 [2024-11-08 17:11:33,365 INFO L432 NwaCegarLoop]: 488 mSDtfsCounter, 680 mSDsluCounter, 5794 mSDsCounter, 0 mSdLazyCounter, 5412 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 6282 SdHoareTripleChecker+Invalid, 5432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:11:33,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 6282 Invalid, 5432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 5412 Invalid, 0 Unknown, 0 Unchecked, 95.6s Time] [2024-11-08 17:11:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2024-11-08 17:11:33,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 902. [2024-11-08 17:11:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 681 states have (on average 1.5315712187958883) internal successors, (1043), 896 states have internal predecessors, (1043), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:11:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1049 transitions. [2024-11-08 17:11:33,377 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1049 transitions. Word has length 110 [2024-11-08 17:11:33,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:11:33,380 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1049 transitions. [2024-11-08 17:11:33,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 6.0) internal successors, (180), 32 states have internal predecessors, (180), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 17:11:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1049 transitions. [2024-11-08 17:11:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:11:33,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:11:33,381 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:11:33,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:11:33,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:11:33,582 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:11:33,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:11:33,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1060001971, now seen corresponding path program 1 times [2024-11-08 17:11:33,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:11:33,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350116763] [2024-11-08 17:11:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:11:33,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:11:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:39,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:11:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:11:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:11:39,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:11:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350116763] [2024-11-08 17:11:39,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350116763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:11:39,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:11:39,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-08 17:11:39,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593428251] [2024-11-08 17:11:39,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:11:39,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 17:11:39,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:11:39,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 17:11:39,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:11:39,784 INFO L87 Difference]: Start difference. First operand 902 states and 1049 transitions. Second operand has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:12:55,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:12:55,554 INFO L93 Difference]: Finished difference Result 953 states and 1105 transitions. [2024-11-08 17:12:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:12:55,555 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2024-11-08 17:12:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:12:55,556 INFO L225 Difference]: With dead ends: 953 [2024-11-08 17:12:55,557 INFO L226 Difference]: Without dead ends: 953 [2024-11-08 17:12:55,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-11-08 17:12:55,557 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 785 mSDsluCounter, 6241 mSDsCounter, 0 mSdLazyCounter, 4241 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 4262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:12:55,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 6731 Invalid, 4262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 4241 Invalid, 0 Unknown, 0 Unchecked, 72.3s Time] [2024-11-08 17:12:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2024-11-08 17:12:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 927. [2024-11-08 17:12:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 705 states have (on average 1.5163120567375887) internal successors, (1069), 920 states have internal predecessors, (1069), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:12:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1076 transitions. [2024-11-08 17:12:55,570 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1076 transitions. Word has length 112 [2024-11-08 17:12:55,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:12:55,570 INFO L471 AbstractCegarLoop]: Abstraction has 927 states and 1076 transitions. [2024-11-08 17:12:55,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:12:55,570 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1076 transitions. [2024-11-08 17:12:55,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-08 17:12:55,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:12:55,571 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:12:55,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-08 17:12:55,572 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr105REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:12:55,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:12:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1060001970, now seen corresponding path program 1 times [2024-11-08 17:12:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:12:55,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932434613] [2024-11-08 17:12:55,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:12:55,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:12:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:02,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:13:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:13:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:13:02,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:13:02,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932434613] [2024-11-08 17:13:02,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932434613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:13:02,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:13:02,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-08 17:13:02,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972493181] [2024-11-08 17:13:02,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:13:02,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 17:13:02,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:13:02,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 17:13:02,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:13:02,562 INFO L87 Difference]: Start difference. First operand 927 states and 1076 transitions. Second operand has 17 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:14:13,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:14:13,144 INFO L93 Difference]: Finished difference Result 952 states and 1104 transitions. [2024-11-08 17:14:13,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:14:13,145 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 112 [2024-11-08 17:14:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:14:13,148 INFO L225 Difference]: With dead ends: 952 [2024-11-08 17:14:13,148 INFO L226 Difference]: Without dead ends: 952 [2024-11-08 17:14:13,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2024-11-08 17:14:13,149 INFO L432 NwaCegarLoop]: 486 mSDtfsCounter, 796 mSDsluCounter, 5035 mSDsCounter, 0 mSdLazyCounter, 3878 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 3898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:14:13,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 5521 Invalid, 3898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3878 Invalid, 0 Unknown, 0 Unchecked, 66.8s Time] [2024-11-08 17:14:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2024-11-08 17:14:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 927. [2024-11-08 17:14:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 705 states have (on average 1.5148936170212766) internal successors, (1068), 920 states have internal predecessors, (1068), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:14:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1075 transitions. [2024-11-08 17:14:13,160 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1075 transitions. Word has length 112 [2024-11-08 17:14:13,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:14:13,161 INFO L471 AbstractCegarLoop]: Abstraction has 927 states and 1075 transitions. [2024-11-08 17:14:13,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:14:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1075 transitions. [2024-11-08 17:14:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-08 17:14:13,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:14:13,162 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:14:13,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-08 17:14:13,162 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr104REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:14:13,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:14:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash -558917350, now seen corresponding path program 1 times [2024-11-08 17:14:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:14:13,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137211455] [2024-11-08 17:14:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:14:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:19,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:14:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:20,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:14:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137211455] [2024-11-08 17:14:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137211455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324816022] [2024-11-08 17:14:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:14:20,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:14:20,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:14:20,210 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:14:20,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:14:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:14:20,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 17:14:20,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:14:20,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:14:23,334 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:14:23,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:14:23,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:14:24,192 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:14:24,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-08 17:14:25,117 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:14:25,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-08 17:14:26,049 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:14:26,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-08 17:14:27,019 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:14:27,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-08 17:14:27,984 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:14:27,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-08 17:14:28,392 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:14:28,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:14:29,489 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:14:29,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-08 17:14:29,655 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 31 treesize of output 13 [2024-11-08 17:14:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:14:29,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:14:29,851 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3698 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem62#1.base| v_ArrVal_3698) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-08 17:14:29,928 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3698 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3698) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-08 17:14:30,133 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-11-08 17:14:30,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2024-11-08 17:14:31,171 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| .cse2 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse2)))) is different from false [2024-11-08 17:14:31,358 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3696)) (.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_3697))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-08 17:14:31,469 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3696))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_3697))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:14:31,626 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3695))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-08 17:14:31,707 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3695))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-08 17:14:31,825 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3694))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3695)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-08 17:14:32,764 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3693 (Array Int Int)) (v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3693))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3694)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3695)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-08 17:14:32,868 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3693 (Array Int Int)) (v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse3 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3693))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3694)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3695)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3696)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_3697))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 17:14:33,378 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3693 (Array Int Int)) (v_ArrVal_3694 (Array Int Int)) (v_ArrVal_3695 (Array Int Int)) (v_ArrVal_3696 (Array Int Int)) (v_ArrVal_3697 (Array Int Int)) (v_ArrVal_3698 (Array Int Int)) (v_ArrVal_3701 (Array Int Int))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_3701))) (store .cse7 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3693)))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3694)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3695)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3696)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_3697))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3698)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-08 17:14:33,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324816022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:14:33,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:14:33,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 24 [2024-11-08 17:14:33,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143070858] [2024-11-08 17:14:33,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:14:33,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:14:33,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:14:33,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:14:33,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=609, Unknown=24, NotChecked=660, Total=1406 [2024-11-08 17:14:33,399 INFO L87 Difference]: Start difference. First operand 927 states and 1075 transitions. Second operand has 25 states, 23 states have (on average 7.217391304347826) internal successors, (166), 24 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:15:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:15:54,849 INFO L93 Difference]: Finished difference Result 943 states and 1093 transitions. [2024-11-08 17:15:54,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 17:15:54,850 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 7.217391304347826) internal successors, (166), 24 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2024-11-08 17:15:54,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:15:54,851 INFO L225 Difference]: With dead ends: 943 [2024-11-08 17:15:54,851 INFO L226 Difference]: Without dead ends: 943 [2024-11-08 17:15:54,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=210, Invalid=1216, Unknown=24, NotChecked=902, Total=2352 [2024-11-08 17:15:54,852 INFO L432 NwaCegarLoop]: 490 mSDtfsCounter, 758 mSDsluCounter, 6717 mSDsCounter, 0 mSdLazyCounter, 4533 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 7207 SdHoareTripleChecker+Invalid, 4563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:15:54,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 7207 Invalid, 4563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 4533 Invalid, 0 Unknown, 0 Unchecked, 77.1s Time] [2024-11-08 17:15:54,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-08 17:15:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 926. [2024-11-08 17:15:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 705 states have (on average 1.5134751773049646) internal successors, (1067), 919 states have internal predecessors, (1067), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-08 17:15:54,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1074 transitions. [2024-11-08 17:15:54,860 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1074 transitions. Word has length 113 [2024-11-08 17:15:54,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:15:54,860 INFO L471 AbstractCegarLoop]: Abstraction has 926 states and 1074 transitions. [2024-11-08 17:15:54,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 7.217391304347826) internal successors, (166), 24 states have internal predecessors, (166), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:15:54,861 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1074 transitions. [2024-11-08 17:15:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-08 17:15:54,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:15:54,861 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:15:54,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 17:15:55,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:15:55,062 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr105REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:15:55,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:15:55,062 INFO L85 PathProgramCache]: Analyzing trace with hash -558917349, now seen corresponding path program 1 times [2024-11-08 17:15:55,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:15:55,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608708091] [2024-11-08 17:15:55,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:15:55,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:15:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:02,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-08 17:16:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:16:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608708091] [2024-11-08 17:16:03,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608708091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:16:03,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350629969] [2024-11-08 17:16:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:03,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:03,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:03,302 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:03,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:16:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:03,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-08 17:16:03,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:03,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:16:06,431 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:16:06,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:16:06,539 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 17:16:06,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:16:08,239 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:16:08,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-08 17:16:08,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:16:09,358 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:16:09,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-08 17:16:09,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:16:10,496 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:16:10,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-08 17:16:10,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:16:11,659 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:16:11,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-08 17:16:11,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:16:12,978 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:16:12,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 48 [2024-11-08 17:16:13,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:16:14,289 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:16:14,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:16:14,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:16:16,450 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:16:16,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:16:16,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:16:16,773 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 31 treesize of output 13 [2024-11-08 17:16:16,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:16:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:17,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:16:21,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:16:21,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 84 [2024-11-08 17:16:21,572 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3931) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3933) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 1)) (forall ((v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem60#1.base| (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem60#1.base| v_ArrVal_3930))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (forall ((v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem60#1.base| v_prenex_44) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem60#1.base| v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_prenex_45) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))))) is different from false [2024-11-08 17:16:21,829 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_prenex_44) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_prenex_45) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (forall ((v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3931) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3933) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 1)) (forall ((v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (= .cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3930))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:16:22,101 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3929))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3928) .cse0 v_prenex_44) (select (select (store .cse1 .cse0 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_prenex_45))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (forall ((v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3929))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3928) .cse3 v_ArrVal_3931) (select (select (store .cse4 .cse3 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3933))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1)) (forall ((v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem59#1.base| v_ArrVal_3929))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (let ((.cse5 (store .cse6 .cse7 v_ArrVal_3930))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse7)))))) is different from false [2024-11-08 17:16:22,277 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse4 v_ArrVal_3929))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_3930))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) (forall ((v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| .cse4 v_ArrVal_3929))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse4 v_ArrVal_3928) .cse5 v_prenex_44) (select (select (store .cse6 .cse5 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_prenex_45))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (forall ((v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse4 v_ArrVal_3929))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse4 v_ArrVal_3928) .cse7 v_ArrVal_3931) (select (select (store .cse8 .cse7 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3933))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1))))) is different from false [2024-11-08 17:16:22,614 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3927))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_3929))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3926) .cse0 v_ArrVal_3928) .cse1 v_ArrVal_3931) (select (select (store .cse2 .cse1 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3933))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1)) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3927))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_3929))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3926) .cse5 v_ArrVal_3928) .cse6 v_prenex_44) (select (select (store .cse7 .cse6 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_prenex_45))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (let ((.cse11 (let ((.cse12 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_3927))) (store .cse12 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3929)))) (let ((.cse9 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (= .cse9 (select (select (let ((.cse10 (store .cse11 .cse9 v_ArrVal_3930))) (store .cse10 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))) is different from false [2024-11-08 17:16:22,815 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int))) (< (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3927))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_3929))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3926) .cse1 v_ArrVal_3928) .cse2 v_ArrVal_3931) (select (select (store .cse3 .cse2 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3933))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1)) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int))) (<= 0 (select (select (let ((.cse9 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3927))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_3929))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3926) .cse6 v_ArrVal_3928) .cse7 v_prenex_44) (select (select (store .cse8 .cse7 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_prenex_45))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int))) (let ((.cse11 (let ((.cse13 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3927))) (store .cse13 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3929)))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (= (select (select (let ((.cse10 (store .cse11 .cse12 v_ArrVal_3930))) (store .cse10 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) .cse12))))))) is different from false [2024-11-08 17:16:23,184 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3933 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (< (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3925))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_3927))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_3929))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3924) .cse0 v_ArrVal_3926) .cse1 v_ArrVal_3928) .cse2 v_ArrVal_3931) (select (select (store .cse3 .cse2 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3933))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1)) (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (let ((.cse8 (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3925))) (store .cse11 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3927)))) (store .cse10 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3929)))) (let ((.cse9 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (= (select (select (let ((.cse7 (store .cse8 .cse9 v_ArrVal_3930))) (store .cse7 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) .cse9)))) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (<= 0 (select (select (let ((.cse17 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3925))) (let ((.cse12 (select (select .cse17 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse16 (store .cse17 .cse12 v_ArrVal_3927))) (let ((.cse13 (select (select .cse16 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse15 (store .cse16 .cse13 v_ArrVal_3929))) (let ((.cse14 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_3924) .cse12 v_ArrVal_3926) .cse13 v_ArrVal_3928) .cse14 v_prenex_44) (select (select (store .cse15 .cse14 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_prenex_45))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))) is different from false [2024-11-08 17:16:29,723 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_prenex_43 (Array Int Int)) (v_prenex_45 (Array Int Int)) (v_prenex_44 (Array Int Int)) (v_ArrVal_3922 (Array Int Int)) (v_ArrVal_3923 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (<= 0 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3923))) (let ((.cse0 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse7 (store .cse8 .cse0 v_ArrVal_3925))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse6 (store .cse7 .cse1 v_ArrVal_3927))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse4 (store .cse6 .cse2 v_ArrVal_3929))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3922) .cse0 v_ArrVal_3924) .cse1 v_ArrVal_3926) .cse2 v_ArrVal_3928) .cse3 v_prenex_44) (select (select (store .cse4 .cse3 v_prenex_43) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_prenex_45))))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (forall ((v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3932 (Array Int Int)) (v_ArrVal_3923 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (let ((.cse11 (let ((.cse12 (let ((.cse13 (let ((.cse14 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3923))) (store .cse14 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3925)))) (store .cse13 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3927)))) (store .cse12 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3929)))) (let ((.cse9 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (= .cse9 (select (select (let ((.cse10 (store .cse11 .cse9 v_ArrVal_3930))) (store .cse10 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3932)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))))) (forall ((v_ArrVal_3926 (Array Int Int)) (v_ArrVal_3927 (Array Int Int)) (v_ArrVal_3928 (Array Int Int)) (v_ArrVal_3929 (Array Int Int)) (v_ArrVal_3930 (Array Int Int)) (v_ArrVal_3931 (Array Int Int)) (v_ArrVal_3922 (Array Int Int)) (v_ArrVal_3933 (Array Int Int)) (v_ArrVal_3923 (Array Int Int)) (v_ArrVal_3924 (Array Int Int)) (v_ArrVal_3925 (Array Int Int))) (< (select (select (let ((.cse22 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3923))) (let ((.cse15 (select (select .cse22 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse21 (store .cse22 .cse15 v_ArrVal_3925))) (let ((.cse16 (select (select .cse21 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse20 (store .cse21 .cse16 v_ArrVal_3927))) (let ((.cse17 (select (select .cse20 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse19 (store .cse20 .cse17 v_ArrVal_3929))) (let ((.cse18 (select (select .cse19 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3922) .cse15 v_ArrVal_3924) .cse16 v_ArrVal_3926) .cse17 v_ArrVal_3928) .cse18 v_ArrVal_3931) (select (select (store .cse19 .cse18 v_ArrVal_3930) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3933))))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) 1)))) is different from false [2024-11-08 17:16:33,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-08 17:16:33,475 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-08 17:16:33,476 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-08 17:16:33,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:33,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-08 17:16:33,677 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:842) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:553) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 46 more [2024-11-08 17:16:33,682 INFO L158 Benchmark]: Toolchain (without parser) took 704522.90ms. Allocated memory was 146.8MB in the beginning and 478.2MB in the end (delta: 331.4MB). Free memory was 112.3MB in the beginning and 369.9MB in the end (delta: -257.6MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. [2024-11-08 17:16:33,682 INFO L158 Benchmark]: CDTParser took 2.02ms. Allocated memory is still 115.3MB. Free memory was 70.0MB in the beginning and 69.9MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:16:33,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1058.42ms. Allocated memory is still 146.8MB. Free memory was 112.3MB in the beginning and 109.8MB in the end (delta: 2.5MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2024-11-08 17:16:33,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 178.00ms. Allocated memory is still 146.8MB. Free memory was 109.8MB in the beginning and 100.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-08 17:16:33,682 INFO L158 Benchmark]: Boogie Preprocessor took 214.39ms. Allocated memory is still 146.8MB. Free memory was 100.6MB in the beginning and 86.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 17:16:33,683 INFO L158 Benchmark]: RCFGBuilder took 2850.36ms. Allocated memory was 146.8MB in the beginning and 209.7MB in the end (delta: 62.9MB). Free memory was 86.7MB in the beginning and 117.7MB in the end (delta: -31.0MB). Peak memory consumption was 88.7MB. Max. memory is 16.1GB. [2024-11-08 17:16:33,683 INFO L158 Benchmark]: TraceAbstraction took 700215.46ms. Allocated memory was 209.7MB in the beginning and 478.2MB in the end (delta: 268.4MB). Free memory was 117.7MB in the beginning and 369.9MB in the end (delta: -252.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2024-11-08 17:16:33,685 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.02ms. Allocated memory is still 115.3MB. Free memory was 70.0MB in the beginning and 69.9MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1058.42ms. Allocated memory is still 146.8MB. Free memory was 112.3MB in the beginning and 109.8MB in the end (delta: 2.5MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 178.00ms. Allocated memory is still 146.8MB. Free memory was 109.8MB in the beginning and 100.6MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 214.39ms. Allocated memory is still 146.8MB. Free memory was 100.6MB in the beginning and 86.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 2850.36ms. Allocated memory was 146.8MB in the beginning and 209.7MB in the end (delta: 62.9MB). Free memory was 86.7MB in the beginning and 117.7MB in the end (delta: -31.0MB). Peak memory consumption was 88.7MB. Max. memory is 16.1GB. * TraceAbstraction took 700215.46ms. Allocated memory was 209.7MB in the beginning and 478.2MB in the end (delta: 268.4MB). Free memory was 117.7MB in the beginning and 369.9MB in the end (delta: -252.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/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_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/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 e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:16:35,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:16:36,024 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-08 17:16:36,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:16:36,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:16:36,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:16:36,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:16:36,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:16:36,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:16:36,079 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:16:36,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:16:36,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:16:36,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:16:36,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:16:36,082 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:16:36,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:16:36,083 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:16:36,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:16:36,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:16:36,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:16:36,085 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:16:36,089 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:16:36,089 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:16:36,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:16:36,090 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:16:36,090 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 17:16:36,090 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:16:36,090 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 17:16:36,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:16:36,091 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:16:36,091 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:16:36,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:16:36,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:16:36,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:16:36,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:16:36,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:16:36,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:16:36,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:16:36,096 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 17:16:36,096 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 17:16:36,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:16:36,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:16:36,098 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:16:36,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:16:36,098 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_01f1ec48-389a-4e87-b303-e916cf6a5a3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-08 17:16:36,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:16:36,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:16:36,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:16:36,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:16:36,568 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:16:36,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i Unable to find full path for "g++" [2024-11-08 17:16:38,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:16:39,158 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:16:39,159 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test2-1.i [2024-11-08 17:16:39,195 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/data/61796e320/3039960646fe41f0ae7d34a3d68fb356/FLAGce8e6182f [2024-11-08 17:16:39,217 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/data/61796e320/3039960646fe41f0ae7d34a3d68fb356 [2024-11-08 17:16:39,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:16:39,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:16:39,226 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:16:39,227 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:16:39,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:16:39,236 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:16:39" (1/1) ... [2024-11-08 17:16:39,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206b91c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:39, skipping insertion in model container [2024-11-08 17:16:39,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:16:39" (1/1) ... [2024-11-08 17:16:39,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:16:39,865 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 17:16:39,914 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 17:16:39,923 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 17:16:39,932 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 17:16:39,948 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 17:16:39,989 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 17:16:39,989 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 17:16:39,993 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 17:16:39,994 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 17:16:40,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:16:40,018 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:16:40,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:16:40,295 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:16:40,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40 WrapperNode [2024-11-08 17:16:40,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:16:40,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:16:40,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:16:40,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:16:40,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,420 INFO L138 Inliner]: procedures = 210, calls = 222, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 862 [2024-11-08 17:16:40,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:16:40,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:16:40,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:16:40,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:16:40,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,527 INFO L175 MemorySlicer]: Split 206 memory accesses to 3 slices as follows [2, 170, 34]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 42, 4]. [2024-11-08 17:16:40,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,574 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:16:40,601 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:16:40,601 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:16:40,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:16:40,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (1/1) ... [2024-11-08 17:16:40,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:16:40,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:40,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:16:40,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:16:40,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-08 17:16:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-08 17:16:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-08 17:16:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-08 17:16:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-08 17:16:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-08 17:16:40,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-08 17:16:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-08 17:16:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-08 17:16:40,676 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-08 17:16:40,676 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-08 17:16:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-08 17:16:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:16:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:16:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:16:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:16:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-08 17:16:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-08 17:16:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-08 17:16:40,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:16:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 17:16:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-08 17:16:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-08 17:16:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:16:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:16:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:16:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:16:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:16:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:16:40,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:16:40,985 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:16:40,988 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:16:40,992 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:16:41,061 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:16:41,099 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:16:45,160 INFO L? ?]: Removed 866 outVars from TransFormulas that were not future-live. [2024-11-08 17:16:45,160 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:16:45,189 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:16:45,189 INFO L316 CfgBuilder]: Removed 50 assume(true) statements. [2024-11-08 17:16:45,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:16:45 BoogieIcfgContainer [2024-11-08 17:16:45,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:16:45,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:16:45,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:16:45,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:16:45,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:16:39" (1/3) ... [2024-11-08 17:16:45,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6259ca5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:16:45, skipping insertion in model container [2024-11-08 17:16:45,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:16:40" (2/3) ... [2024-11-08 17:16:45,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6259ca5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:16:45, skipping insertion in model container [2024-11-08 17:16:45,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:16:45" (3/3) ... [2024-11-08 17:16:45,200 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test2-1.i [2024-11-08 17:16:45,220 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:16:45,220 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 420 error locations. [2024-11-08 17:16:45,312 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:16:45,319 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;@77d3f4f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:16:45,319 INFO L334 AbstractCegarLoop]: Starting to check reachability of 420 error locations. [2024-11-08 17:16:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 863 states, 441 states have (on average 2.1859410430839) internal successors, (964), 858 states have internal predecessors, (964), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:16:45,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:16:45,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:16:45,336 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:16:45,337 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr419ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:16:45,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:45,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1758111, now seen corresponding path program 1 times [2024-11-08 17:16:45,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:16:45,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692691987] [2024-11-08 17:16:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:45,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:45,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:45,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:45,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:16:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:45,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:16:45,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:45,678 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-08 17:16:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:45,681 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:16:45,681 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:16:45,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692691987] [2024-11-08 17:16:45,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692691987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:16:45,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:16:45,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:16:45,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267739778] [2024-11-08 17:16:45,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:45,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:16:45,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:16:45,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:16:45,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:16:45,723 INFO L87 Difference]: Start difference. First operand has 863 states, 441 states have (on average 2.1859410430839) internal successors, (964), 858 states have internal predecessors, (964), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:47,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:16:47,974 INFO L93 Difference]: Finished difference Result 1068 states and 1154 transitions. [2024-11-08 17:16:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:16:47,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-08 17:16:47,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:16:47,994 INFO L225 Difference]: With dead ends: 1068 [2024-11-08 17:16:47,995 INFO L226 Difference]: Without dead ends: 1065 [2024-11-08 17:16:47,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:16:47,999 INFO L432 NwaCegarLoop]: 796 mSDtfsCounter, 237 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1155 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:16:48,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1265 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 540 Invalid, 0 Unknown, 1155 Unchecked, 2.1s Time] [2024-11-08 17:16:48,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2024-11-08 17:16:48,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 851. [2024-11-08 17:16:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 435 states have (on average 2.057471264367816) internal successors, (895), 846 states have internal predecessors, (895), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:16:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 901 transitions. [2024-11-08 17:16:48,133 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 901 transitions. Word has length 4 [2024-11-08 17:16:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:16:48,134 INFO L471 AbstractCegarLoop]: Abstraction has 851 states and 901 transitions. [2024-11-08 17:16:48,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 901 transitions. [2024-11-08 17:16:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:16:48,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:16:48,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:16:48,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:48,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:48,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:16:48,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-08 17:16:48,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:16:48,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536477422] [2024-11-08 17:16:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:48,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:48,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:48,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:48,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:16:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:48,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:16:48,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:48,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 17:16:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:48,559 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:16:48,559 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:16:48,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536477422] [2024-11-08 17:16:48,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536477422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:16:48,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:16:48,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:16:48,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534482226] [2024-11-08 17:16:48,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:48,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:16:48,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:16:48,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:16:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:16:48,564 INFO L87 Difference]: Start difference. First operand 851 states and 901 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:50,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:16:50,271 INFO L93 Difference]: Finished difference Result 848 states and 899 transitions. [2024-11-08 17:16:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:16:50,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-08 17:16:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:16:50,276 INFO L225 Difference]: With dead ends: 848 [2024-11-08 17:16:50,277 INFO L226 Difference]: Without dead ends: 848 [2024-11-08 17:16:50,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:16:50,278 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 783 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:16:50,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 558 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 17:16:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-08 17:16:50,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2024-11-08 17:16:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 443 states have (on average 2.015801354401806) internal successors, (893), 843 states have internal predecessors, (893), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:16:50,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 899 transitions. [2024-11-08 17:16:50,303 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 899 transitions. Word has length 4 [2024-11-08 17:16:50,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:16:50,303 INFO L471 AbstractCegarLoop]: Abstraction has 848 states and 899 transitions. [2024-11-08 17:16:50,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:50,304 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 899 transitions. [2024-11-08 17:16:50,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:16:50,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:16:50,304 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:16:50,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 17:16:50,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:50,505 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:16:50,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:50,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-08 17:16:50,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:16:50,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361294752] [2024-11-08 17:16:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:50,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:50,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:50,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:50,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:16:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:50,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:16:50,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:50,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:16:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:50,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:16:50,678 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:16:50,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361294752] [2024-11-08 17:16:50,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361294752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:16:50,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:16:50,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:16:50,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341451373] [2024-11-08 17:16:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:50,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:16:50,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:16:50,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:16:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:16:50,680 INFO L87 Difference]: Start difference. First operand 848 states and 899 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:53,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:16:53,096 INFO L93 Difference]: Finished difference Result 1061 states and 1135 transitions. [2024-11-08 17:16:53,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:16:53,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2024-11-08 17:16:53,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:16:53,101 INFO L225 Difference]: With dead ends: 1061 [2024-11-08 17:16:53,101 INFO L226 Difference]: Without dead ends: 1061 [2024-11-08 17:16:53,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:16:53,102 INFO L432 NwaCegarLoop]: 796 mSDtfsCounter, 236 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:16:53,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1267 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 17:16:53,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2024-11-08 17:16:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 975. [2024-11-08 17:16:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 571 states have (on average 1.9719789842381787) internal successors, (1126), 970 states have internal predecessors, (1126), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-08 17:16:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1132 transitions. [2024-11-08 17:16:53,127 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1132 transitions. Word has length 4 [2024-11-08 17:16:53,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:16:53,128 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1132 transitions. [2024-11-08 17:16:53,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:16:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1132 transitions. [2024-11-08 17:16:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 17:16:53,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:16:53,129 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:16:53,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:16:53,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:53,330 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:16:53,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:16:53,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1021429073, now seen corresponding path program 1 times [2024-11-08 17:16:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:16:53,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931095239] [2024-11-08 17:16:53,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:16:53,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:16:53,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:16:53,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:16:53,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:16:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:16:53,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:16:53,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:16:53,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:16:53,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 17:16:53,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:16:53,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2024-11-08 17:16:53,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:16:53,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 17:16:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:16:53,682 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:16:53,683 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:16:53,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931095239] [2024-11-08 17:16:53,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931095239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:16:53,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:16:53,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:16:53,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452520304] [2024-11-08 17:16:53,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:16:53,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:16:53,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:16:53,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:16:53,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:16:53,685 INFO L87 Difference]: Start difference. First operand 975 states and 1132 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 17:17:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:00,325 INFO L93 Difference]: Finished difference Result 2028 states and 2260 transitions. [2024-11-08 17:17:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:17:00,327 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 17:17:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:00,333 INFO L225 Difference]: With dead ends: 2028 [2024-11-08 17:17:00,333 INFO L226 Difference]: Without dead ends: 2028 [2024-11-08 17:17:00,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:00,336 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 1412 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:00,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1058 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-08 17:17:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2024-11-08 17:17:00,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1162. [2024-11-08 17:17:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 758 states have (on average 1.9736147757255937) internal successors, (1496), 1155 states have internal predecessors, (1496), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1506 transitions. [2024-11-08 17:17:00,376 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1506 transitions. Word has length 8 [2024-11-08 17:17:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:00,376 INFO L471 AbstractCegarLoop]: Abstraction has 1162 states and 1506 transitions. [2024-11-08 17:17:00,377 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 17:17:00,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1506 transitions. [2024-11-08 17:17:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 17:17:00,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:00,381 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:00,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:17:00,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:00,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:00,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530194, now seen corresponding path program 1 times [2024-11-08 17:17:00,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:00,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104340893] [2024-11-08 17:17:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:00,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:00,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:00,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:00,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:17:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:00,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:17:00,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:00,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 17:17:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:00,738 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:00,738 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104340893] [2024-11-08 17:17:00,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104340893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:00,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:00,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:17:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717452026] [2024-11-08 17:17:00,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:00,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:17:00,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:17:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:17:00,740 INFO L87 Difference]: Start difference. First operand 1162 states and 1506 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:02,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:02,530 INFO L93 Difference]: Finished difference Result 1329 states and 1672 transitions. [2024-11-08 17:17:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:17:02,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 17:17:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:02,540 INFO L225 Difference]: With dead ends: 1329 [2024-11-08 17:17:02,540 INFO L226 Difference]: Without dead ends: 1329 [2024-11-08 17:17:02,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:17:02,541 INFO L432 NwaCegarLoop]: 676 mSDtfsCounter, 768 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:02,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 828 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 17:17:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2024-11-08 17:17:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1115. [2024-11-08 17:17:02,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 758 states have (on average 1.8799472295514512) internal successors, (1425), 1108 states have internal predecessors, (1425), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1435 transitions. [2024-11-08 17:17:02,633 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1435 transitions. Word has length 9 [2024-11-08 17:17:02,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:02,637 INFO L471 AbstractCegarLoop]: Abstraction has 1115 states and 1435 transitions. [2024-11-08 17:17:02,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1435 transitions. [2024-11-08 17:17:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 17:17:02,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:02,638 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:02,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:02,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:02,839 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:02,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:02,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530193, now seen corresponding path program 1 times [2024-11-08 17:17:02,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:02,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049957564] [2024-11-08 17:17:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:02,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:02,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:02,843 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:02,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:17:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:02,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:17:02,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:02,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:17:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:03,021 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:03,021 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:03,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049957564] [2024-11-08 17:17:03,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049957564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:03,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:03,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:17:03,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125031774] [2024-11-08 17:17:03,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:03,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:17:03,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:17:03,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:17:03,024 INFO L87 Difference]: Start difference. First operand 1115 states and 1435 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:05,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:05,326 INFO L93 Difference]: Finished difference Result 1589 states and 2067 transitions. [2024-11-08 17:17:05,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:17:05,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 17:17:05,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:05,331 INFO L225 Difference]: With dead ends: 1589 [2024-11-08 17:17:05,331 INFO L226 Difference]: Without dead ends: 1589 [2024-11-08 17:17:05,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:17:05,332 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 519 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:05,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1174 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 17:17:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2024-11-08 17:17:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1177. [2024-11-08 17:17:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 830 states have (on average 1.8686746987951808) internal successors, (1551), 1170 states have internal predecessors, (1551), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1561 transitions. [2024-11-08 17:17:05,384 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1561 transitions. Word has length 9 [2024-11-08 17:17:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:05,385 INFO L471 AbstractCegarLoop]: Abstraction has 1177 states and 1561 transitions. [2024-11-08 17:17:05,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1561 transitions. [2024-11-08 17:17:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 17:17:05,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:05,386 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:05,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:17:05,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:05,592 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr419ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:05,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:05,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1232445283, now seen corresponding path program 1 times [2024-11-08 17:17:05,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:05,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76353474] [2024-11-08 17:17:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:05,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:05,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:05,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:05,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:17:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:05,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:17:05,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:05,865 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2024-11-08 17:17:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:05,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:05,866 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:05,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76353474] [2024-11-08 17:17:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76353474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:05,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:17:05,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775776811] [2024-11-08 17:17:05,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:05,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:17:05,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:05,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:17:05,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:17:05,870 INFO L87 Difference]: Start difference. First operand 1177 states and 1561 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:07,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:07,570 INFO L93 Difference]: Finished difference Result 1392 states and 1798 transitions. [2024-11-08 17:17:07,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:17:07,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 17:17:07,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:07,576 INFO L225 Difference]: With dead ends: 1392 [2024-11-08 17:17:07,576 INFO L226 Difference]: Without dead ends: 1390 [2024-11-08 17:17:07,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:17:07,577 INFO L432 NwaCegarLoop]: 739 mSDtfsCounter, 230 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1068 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:07,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1197 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 464 Invalid, 0 Unknown, 1068 Unchecked, 1.7s Time] [2024-11-08 17:17:07,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-11-08 17:17:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1305. [2024-11-08 17:17:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 958 states have (on average 1.8622129436325678) internal successors, (1784), 1298 states have internal predecessors, (1784), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1794 transitions. [2024-11-08 17:17:07,608 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1794 transitions. Word has length 11 [2024-11-08 17:17:07,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:07,608 INFO L471 AbstractCegarLoop]: Abstraction has 1305 states and 1794 transitions. [2024-11-08 17:17:07,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1794 transitions. [2024-11-08 17:17:07,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 17:17:07,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:07,609 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:07,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:17:07,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:07,810 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:07,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash -723943859, now seen corresponding path program 1 times [2024-11-08 17:17:07,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:07,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682768617] [2024-11-08 17:17:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:07,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:07,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:07,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:07,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:17:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:07,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:17:07,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:07,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:07,994 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:07,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682768617] [2024-11-08 17:17:07,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682768617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:07,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:07,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:17:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489652423] [2024-11-08 17:17:07,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:07,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:17:07,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:17:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:17:07,996 INFO L87 Difference]: Start difference. First operand 1305 states and 1794 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:10,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:10,216 INFO L93 Difference]: Finished difference Result 1294 states and 1737 transitions. [2024-11-08 17:17:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:17:10,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 17:17:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:10,220 INFO L225 Difference]: With dead ends: 1294 [2024-11-08 17:17:10,220 INFO L226 Difference]: Without dead ends: 1294 [2024-11-08 17:17:10,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:10,221 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 783 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:10,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 894 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 17:17:10,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2024-11-08 17:17:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1282. [2024-11-08 17:17:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 958 states have (on average 1.790187891440501) internal successors, (1715), 1275 states have internal predecessors, (1715), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1725 transitions. [2024-11-08 17:17:10,247 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1725 transitions. Word has length 15 [2024-11-08 17:17:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:10,247 INFO L471 AbstractCegarLoop]: Abstraction has 1282 states and 1725 transitions. [2024-11-08 17:17:10,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1725 transitions. [2024-11-08 17:17:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 17:17:10,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:10,249 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:10,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:17:10,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:10,450 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:10,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash -723943858, now seen corresponding path program 1 times [2024-11-08 17:17:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:10,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78334085] [2024-11-08 17:17:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:10,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:10,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:10,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:10,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:17:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:10,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:17:10,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:10,599 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:10,599 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:10,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78334085] [2024-11-08 17:17:10,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78334085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:10,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:17:10,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773750246] [2024-11-08 17:17:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:10,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:17:10,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:10,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:17:10,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:17:10,601 INFO L87 Difference]: Start difference. First operand 1282 states and 1725 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:10,646 INFO L93 Difference]: Finished difference Result 1213 states and 1626 transitions. [2024-11-08 17:17:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:17:10,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-11-08 17:17:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:10,651 INFO L225 Difference]: With dead ends: 1213 [2024-11-08 17:17:10,651 INFO L226 Difference]: Without dead ends: 1213 [2024-11-08 17:17:10,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:17:10,654 INFO L432 NwaCegarLoop]: 764 mSDtfsCounter, 61 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:10,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1475 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:17:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-11-08 17:17:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2024-11-08 17:17:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 901 states have (on average 1.7935627081021088) internal successors, (1616), 1206 states have internal predecessors, (1616), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1626 transitions. [2024-11-08 17:17:10,681 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1626 transitions. Word has length 15 [2024-11-08 17:17:10,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:10,682 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1626 transitions. [2024-11-08 17:17:10,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:10,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1626 transitions. [2024-11-08 17:17:10,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 17:17:10,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:10,683 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:10,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:17:10,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:10,887 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:10,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash -965639653, now seen corresponding path program 1 times [2024-11-08 17:17:10,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:10,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135393974] [2024-11-08 17:17:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:10,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:10,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:10,891 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:10,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:17:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:11,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:17:11,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:11,035 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:11,035 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:11,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135393974] [2024-11-08 17:17:11,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135393974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:11,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:11,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:17:11,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075072420] [2024-11-08 17:17:11,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:11,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:17:11,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:11,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:17:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:17:11,038 INFO L87 Difference]: Start difference. First operand 1213 states and 1626 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:11,134 INFO L93 Difference]: Finished difference Result 1182 states and 1560 transitions. [2024-11-08 17:17:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:17:11,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-08 17:17:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:11,138 INFO L225 Difference]: With dead ends: 1182 [2024-11-08 17:17:11,139 INFO L226 Difference]: Without dead ends: 1182 [2024-11-08 17:17:11,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:11,140 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 45 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:11,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2155 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:17:11,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2024-11-08 17:17:11,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2024-11-08 17:17:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 877 states have (on average 1.7673888255416192) internal successors, (1550), 1175 states have internal predecessors, (1550), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1560 transitions. [2024-11-08 17:17:11,164 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1560 transitions. Word has length 16 [2024-11-08 17:17:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:11,164 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1560 transitions. [2024-11-08 17:17:11,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1560 transitions. [2024-11-08 17:17:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:17:11,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:11,172 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 17:17:11,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 17:17:11,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:11,373 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:11,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:11,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1271928384, now seen corresponding path program 1 times [2024-11-08 17:17:11,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:11,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212371374] [2024-11-08 17:17:11,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:11,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:11,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:11,377 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:11,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:17:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:11,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:17:11,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:11,584 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 17:17:11,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:11,584 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:11,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212371374] [2024-11-08 17:17:11,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212371374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:11,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:11,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:17:11,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985312393] [2024-11-08 17:17:11,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:11,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:17:11,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:11,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:17:11,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:17:11,587 INFO L87 Difference]: Start difference. First operand 1182 states and 1560 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 17:17:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:13,734 INFO L93 Difference]: Finished difference Result 1210 states and 1524 transitions. [2024-11-08 17:17:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:17:13,734 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 17:17:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:13,738 INFO L225 Difference]: With dead ends: 1210 [2024-11-08 17:17:13,738 INFO L226 Difference]: Without dead ends: 1210 [2024-11-08 17:17:13,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:13,739 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 734 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:13,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1044 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 17:17:13,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-08 17:17:13,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1159. [2024-11-08 17:17:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 877 states have (on average 1.7149372862029646) internal successors, (1504), 1152 states have internal predecessors, (1504), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1514 transitions. [2024-11-08 17:17:13,762 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1514 transitions. Word has length 20 [2024-11-08 17:17:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:13,762 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 1514 transitions. [2024-11-08 17:17:13,763 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 17:17:13,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1514 transitions. [2024-11-08 17:17:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:17:13,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:13,764 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 17:17:13,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:13,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:13,964 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:13,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:13,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1271928383, now seen corresponding path program 1 times [2024-11-08 17:17:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:13,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363775559] [2024-11-08 17:17:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:13,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:13,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:13,967 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:13,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:17:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:14,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:17:14,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:14,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:14,124 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:14,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363775559] [2024-11-08 17:17:14,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363775559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:14,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:14,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:17:14,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436338944] [2024-11-08 17:17:14,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:14,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:17:14,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:14,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:17:14,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:17:14,126 INFO L87 Difference]: Start difference. First operand 1159 states and 1514 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 17:17:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:14,164 INFO L93 Difference]: Finished difference Result 1109 states and 1448 transitions. [2024-11-08 17:17:14,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:17:14,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 17:17:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:14,168 INFO L225 Difference]: With dead ends: 1109 [2024-11-08 17:17:14,168 INFO L226 Difference]: Without dead ends: 1109 [2024-11-08 17:17:14,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:17:14,169 INFO L432 NwaCegarLoop]: 680 mSDtfsCounter, 61 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:14,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1307 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:17:14,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2024-11-08 17:17:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2024-11-08 17:17:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 839 states have (on average 1.7139451728247914) internal successors, (1438), 1102 states have internal predecessors, (1438), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1448 transitions. [2024-11-08 17:17:14,189 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1448 transitions. Word has length 20 [2024-11-08 17:17:14,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:14,189 INFO L471 AbstractCegarLoop]: Abstraction has 1109 states and 1448 transitions. [2024-11-08 17:17:14,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 17:17:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1448 transitions. [2024-11-08 17:17:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 17:17:14,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:14,190 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:14,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 17:17:14,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:14,391 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:14,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:14,392 INFO L85 PathProgramCache]: Analyzing trace with hash -773291619, now seen corresponding path program 1 times [2024-11-08 17:17:14,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:14,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425362118] [2024-11-08 17:17:14,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:14,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:14,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:14,395 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:14,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:17:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:14,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:17:14,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:14,590 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:14,591 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:14,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425362118] [2024-11-08 17:17:14,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425362118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:14,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:14,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:17:14,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376863820] [2024-11-08 17:17:14,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:14,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:17:14,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:14,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:17:14,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:17:14,592 INFO L87 Difference]: Start difference. First operand 1109 states and 1448 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:14,677 INFO L93 Difference]: Finished difference Result 1086 states and 1404 transitions. [2024-11-08 17:17:14,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:17:14,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 17:17:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:14,681 INFO L225 Difference]: With dead ends: 1086 [2024-11-08 17:17:14,681 INFO L226 Difference]: Without dead ends: 1086 [2024-11-08 17:17:14,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:14,682 INFO L432 NwaCegarLoop]: 642 mSDtfsCounter, 45 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:14,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1903 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:17:14,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2024-11-08 17:17:14,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1086. [2024-11-08 17:17:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 823 states have (on average 1.6938031591737546) internal successors, (1394), 1079 states have internal predecessors, (1394), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1404 transitions. [2024-11-08 17:17:14,700 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1404 transitions. Word has length 21 [2024-11-08 17:17:14,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:14,700 INFO L471 AbstractCegarLoop]: Abstraction has 1086 states and 1404 transitions. [2024-11-08 17:17:14,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1404 transitions. [2024-11-08 17:17:14,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 17:17:14,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:14,702 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:14,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 17:17:14,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:14,906 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr369REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:14,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash -987302423, now seen corresponding path program 1 times [2024-11-08 17:17:14,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:14,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1916282489] [2024-11-08 17:17:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:14,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:14,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:14,908 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:14,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:17:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:15,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:17:15,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:15,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:17:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:15,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:15,308 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:15,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916282489] [2024-11-08 17:17:15,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916282489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:15,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:15,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:17:15,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711307470] [2024-11-08 17:17:15,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:15,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:17:15,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:15,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:17:15,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:17:15,310 INFO L87 Difference]: Start difference. First operand 1086 states and 1404 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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 17:17:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:17,540 INFO L93 Difference]: Finished difference Result 1129 states and 1406 transitions. [2024-11-08 17:17:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:17:17,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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) Word has length 30 [2024-11-08 17:17:17,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:17,542 INFO L225 Difference]: With dead ends: 1129 [2024-11-08 17:17:17,542 INFO L226 Difference]: Without dead ends: 1129 [2024-11-08 17:17:17,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:17,543 INFO L432 NwaCegarLoop]: 614 mSDtfsCounter, 162 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:17,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1280 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 17:17:17,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2024-11-08 17:17:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1086. [2024-11-08 17:17:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 823 states have (on average 1.6889428918590523) internal successors, (1390), 1079 states have internal predecessors, (1390), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1400 transitions. [2024-11-08 17:17:17,567 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1400 transitions. Word has length 30 [2024-11-08 17:17:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:17,568 INFO L471 AbstractCegarLoop]: Abstraction has 1086 states and 1400 transitions. [2024-11-08 17:17:17,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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 17:17:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1400 transitions. [2024-11-08 17:17:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 17:17:17,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:17,569 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:17,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 17:17:17,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:17,770 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:17,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1472895925, now seen corresponding path program 1 times [2024-11-08 17:17:17,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:17,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302354508] [2024-11-08 17:17:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:17,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:17,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:17,772 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:17,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:17:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:17,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:17:17,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:17,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:17:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:18,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:18,183 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:18,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302354508] [2024-11-08 17:17:18,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302354508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:18,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:18,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:17:18,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806592973] [2024-11-08 17:17:18,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:18,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:17:18,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:18,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:17:18,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:17:18,185 INFO L87 Difference]: Start difference. First operand 1086 states and 1400 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:20,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:20,584 INFO L93 Difference]: Finished difference Result 1406 states and 1750 transitions. [2024-11-08 17:17:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:17:20,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 17:17:20,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:20,590 INFO L225 Difference]: With dead ends: 1406 [2024-11-08 17:17:20,590 INFO L226 Difference]: Without dead ends: 1406 [2024-11-08 17:17:20,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:20,593 INFO L432 NwaCegarLoop]: 670 mSDtfsCounter, 362 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:20,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1349 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 17:17:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2024-11-08 17:17:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1082. [2024-11-08 17:17:20,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 823 states have (on average 1.6792223572296476) internal successors, (1382), 1075 states have internal predecessors, (1382), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1392 transitions. [2024-11-08 17:17:20,629 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1392 transitions. Word has length 35 [2024-11-08 17:17:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:20,630 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1392 transitions. [2024-11-08 17:17:20,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:17:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1392 transitions. [2024-11-08 17:17:20,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 17:17:20,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:20,633 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:20,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:20,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:20,834 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:20,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash -501315872, now seen corresponding path program 1 times [2024-11-08 17:17:20,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:20,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211474973] [2024-11-08 17:17:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:20,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:20,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:20,838 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:20,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:17:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:21,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:17:21,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:21,302 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:21,303 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:21,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211474973] [2024-11-08 17:17:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211474973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:21,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:21,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:17:21,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793726585] [2024-11-08 17:17:21,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:21,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:17:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:21,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:17:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:17:21,304 INFO L87 Difference]: Start difference. First operand 1082 states and 1392 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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 17:17:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:21,428 INFO L93 Difference]: Finished difference Result 1232 states and 1516 transitions. [2024-11-08 17:17:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:17:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) Word has length 44 [2024-11-08 17:17:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:21,432 INFO L225 Difference]: With dead ends: 1232 [2024-11-08 17:17:21,432 INFO L226 Difference]: Without dead ends: 1232 [2024-11-08 17:17:21,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:17:21,433 INFO L432 NwaCegarLoop]: 666 mSDtfsCounter, 91 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:21,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1279 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:17:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2024-11-08 17:17:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1219. [2024-11-08 17:17:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 960 states have (on average 1.5645833333333334) internal successors, (1502), 1212 states have internal predecessors, (1502), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:21,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1512 transitions. [2024-11-08 17:17:21,451 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1512 transitions. Word has length 44 [2024-11-08 17:17:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:21,452 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1512 transitions. [2024-11-08 17:17:21,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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 17:17:21,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1512 transitions. [2024-11-08 17:17:21,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-08 17:17:21,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:21,453 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:21,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 17:17:21,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:21,654 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:21,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:21,655 INFO L85 PathProgramCache]: Analyzing trace with hash 868800518, now seen corresponding path program 1 times [2024-11-08 17:17:21,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:21,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545965393] [2024-11-08 17:17:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:21,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:21,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:21,656 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:21,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 17:17:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:21,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:17:21,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:21,895 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:21,895 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545965393] [2024-11-08 17:17:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545965393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:21,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:21,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:17:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635552148] [2024-11-08 17:17:21,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:21,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:17:21,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:21,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:17:21,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:17:21,898 INFO L87 Difference]: Start difference. First operand 1219 states and 1512 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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 17:17:21,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:21,971 INFO L93 Difference]: Finished difference Result 1189 states and 1462 transitions. [2024-11-08 17:17:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:17:21,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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) Word has length 50 [2024-11-08 17:17:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:21,976 INFO L225 Difference]: With dead ends: 1189 [2024-11-08 17:17:21,977 INFO L226 Difference]: Without dead ends: 1189 [2024-11-08 17:17:21,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:21,977 INFO L432 NwaCegarLoop]: 640 mSDtfsCounter, 27 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:21,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1883 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:17:21,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2024-11-08 17:17:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2024-11-08 17:17:21,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 930 states have (on average 1.5612903225806452) internal successors, (1452), 1182 states have internal predecessors, (1452), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1462 transitions. [2024-11-08 17:17:21,995 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1462 transitions. Word has length 50 [2024-11-08 17:17:21,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:21,997 INFO L471 AbstractCegarLoop]: Abstraction has 1189 states and 1462 transitions. [2024-11-08 17:17:21,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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 17:17:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1462 transitions. [2024-11-08 17:17:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 17:17:21,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:21,998 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:22,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 17:17:22,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:22,199 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:22,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:22,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1693277959, now seen corresponding path program 1 times [2024-11-08 17:17:22,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:22,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725879175] [2024-11-08 17:17:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:22,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:22,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:22,202 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:22,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 17:17:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:22,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:17:22,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:22,480 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:22,480 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725879175] [2024-11-08 17:17:22,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725879175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:22,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:22,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:17:22,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564605748] [2024-11-08 17:17:22,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:22,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:17:22,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:22,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:17:22,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:17:22,482 INFO L87 Difference]: Start difference. First operand 1189 states and 1462 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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 17:17:22,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:22,560 INFO L93 Difference]: Finished difference Result 1171 states and 1432 transitions. [2024-11-08 17:17:22,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:17:22,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) Word has length 54 [2024-11-08 17:17:22,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:22,565 INFO L225 Difference]: With dead ends: 1171 [2024-11-08 17:17:22,565 INFO L226 Difference]: Without dead ends: 1171 [2024-11-08 17:17:22,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:22,566 INFO L432 NwaCegarLoop]: 636 mSDtfsCounter, 21 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:22,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1877 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:17:22,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2024-11-08 17:17:22,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1171. [2024-11-08 17:17:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 912 states have (on average 1.5592105263157894) internal successors, (1422), 1164 states have internal predecessors, (1422), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1432 transitions. [2024-11-08 17:17:22,583 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1432 transitions. Word has length 54 [2024-11-08 17:17:22,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:22,583 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1432 transitions. [2024-11-08 17:17:22,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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 17:17:22,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1432 transitions. [2024-11-08 17:17:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 17:17:22,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:22,584 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:22,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:22,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:22,785 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:22,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:22,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1743557166, now seen corresponding path program 1 times [2024-11-08 17:17:22,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:22,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533422163] [2024-11-08 17:17:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:22,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:22,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:22,789 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:22,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 17:17:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:22,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:17:22,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:23,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:17:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:23,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:23,071 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:23,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533422163] [2024-11-08 17:17:23,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533422163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:23,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:23,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:17:23,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661155219] [2024-11-08 17:17:23,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:23,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:17:23,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:23,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:17:23,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:17:23,073 INFO L87 Difference]: Start difference. First operand 1171 states and 1432 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 17:17:23,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:23,422 INFO L93 Difference]: Finished difference Result 1746 states and 2089 transitions. [2024-11-08 17:17:23,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:17:23,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 58 [2024-11-08 17:17:23,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:23,427 INFO L225 Difference]: With dead ends: 1746 [2024-11-08 17:17:23,427 INFO L226 Difference]: Without dead ends: 1743 [2024-11-08 17:17:23,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:17:23,428 INFO L432 NwaCegarLoop]: 624 mSDtfsCounter, 1221 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:23,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 2472 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:17:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2024-11-08 17:17:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1117. [2024-11-08 17:17:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 858 states have (on average 1.592074592074592) internal successors, (1366), 1110 states have internal predecessors, (1366), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1376 transitions. [2024-11-08 17:17:23,444 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1376 transitions. Word has length 58 [2024-11-08 17:17:23,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:23,445 INFO L471 AbstractCegarLoop]: Abstraction has 1117 states and 1376 transitions. [2024-11-08 17:17:23,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 17:17:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1376 transitions. [2024-11-08 17:17:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:17:23,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:23,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:23,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 17:17:23,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:23,646 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:23,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:23,647 INFO L85 PathProgramCache]: Analyzing trace with hash 817264941, now seen corresponding path program 1 times [2024-11-08 17:17:23,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:23,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [82817846] [2024-11-08 17:17:23,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:23,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:23,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:23,648 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:23,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 17:17:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:23,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:17:23,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:23,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:17:24,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:17:24,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:17:24,545 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:17:24,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-08 17:17:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:24,549 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:24,549 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:24,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82817846] [2024-11-08 17:17:24,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82817846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:24,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:24,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:17:24,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134308799] [2024-11-08 17:17:24,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:24,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:17:24,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:17:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:24,552 INFO L87 Difference]: Start difference. First operand 1117 states and 1376 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 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 17:17:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:26,646 INFO L93 Difference]: Finished difference Result 1079 states and 1324 transitions. [2024-11-08 17:17:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:17:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 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) Word has length 62 [2024-11-08 17:17:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:26,650 INFO L225 Difference]: With dead ends: 1079 [2024-11-08 17:17:26,650 INFO L226 Difference]: Without dead ends: 1079 [2024-11-08 17:17:26,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:17:26,651 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 579 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:26,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 423 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 17:17:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-08 17:17:26,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1007. [2024-11-08 17:17:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 786 states have (on average 1.4860050890585241) internal successors, (1168), 1000 states have internal predecessors, (1168), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1178 transitions. [2024-11-08 17:17:26,665 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1178 transitions. Word has length 62 [2024-11-08 17:17:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:26,665 INFO L471 AbstractCegarLoop]: Abstraction has 1007 states and 1178 transitions. [2024-11-08 17:17:26,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 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 17:17:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1178 transitions. [2024-11-08 17:17:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:17:26,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:26,667 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:26,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-08 17:17:26,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:26,867 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:26,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:26,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1492099519, now seen corresponding path program 1 times [2024-11-08 17:17:26,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:26,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899497779] [2024-11-08 17:17:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:26,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:26,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:26,869 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:26,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 17:17:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:27,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:17:27,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:27,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 17:17:27,127 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 19 treesize of output 1 [2024-11-08 17:17:27,162 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 23 treesize of output 11 [2024-11-08 17:17:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:27,175 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:27,176 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:27,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899497779] [2024-11-08 17:17:27,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899497779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:27,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:27,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:17:27,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343661980] [2024-11-08 17:17:27,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:27,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:17:27,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:27,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:17:27,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:27,178 INFO L87 Difference]: Start difference. First operand 1007 states and 1178 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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 17:17:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:29,170 INFO L93 Difference]: Finished difference Result 1006 states and 1176 transitions. [2024-11-08 17:17:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:17:29,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) Word has length 67 [2024-11-08 17:17:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:29,173 INFO L225 Difference]: With dead ends: 1006 [2024-11-08 17:17:29,174 INFO L226 Difference]: Without dead ends: 1006 [2024-11-08 17:17:29,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:17:29,175 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 2 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:29,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1606 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 17:17:29,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2024-11-08 17:17:29,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 1006. [2024-11-08 17:17:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 786 states have (on average 1.4834605597964376) internal successors, (1166), 999 states have internal predecessors, (1166), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1176 transitions. [2024-11-08 17:17:29,188 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1176 transitions. Word has length 67 [2024-11-08 17:17:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:29,188 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1176 transitions. [2024-11-08 17:17:29,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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 17:17:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1176 transitions. [2024-11-08 17:17:29,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:17:29,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:29,190 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:29,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:29,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:29,390 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:29,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:29,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1492099518, now seen corresponding path program 1 times [2024-11-08 17:17:29,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:29,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539918689] [2024-11-08 17:17:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:29,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:29,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:29,392 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:29,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 17:17:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:29,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 17:17:29,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:29,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:17:29,649 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 19 treesize of output 1 [2024-11-08 17:17:29,659 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 17:17:29,723 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 21 treesize of output 9 [2024-11-08 17:17:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:29,749 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:29,749 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:29,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539918689] [2024-11-08 17:17:29,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539918689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:29,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:29,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:17:29,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306634650] [2024-11-08 17:17:29,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:29,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:17:29,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:29,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:17:29,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:17:29,752 INFO L87 Difference]: Start difference. First operand 1006 states and 1176 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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 17:17:32,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:32,448 INFO L93 Difference]: Finished difference Result 1005 states and 1174 transitions. [2024-11-08 17:17:32,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:17:32,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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) Word has length 67 [2024-11-08 17:17:32,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:32,452 INFO L225 Difference]: With dead ends: 1005 [2024-11-08 17:17:32,452 INFO L226 Difference]: Without dead ends: 1005 [2024-11-08 17:17:32,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:17:32,453 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 1 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:32,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1578 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 17:17:32,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2024-11-08 17:17:32,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1005. [2024-11-08 17:17:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 784 states have (on average 1.4846938775510203) internal successors, (1164), 998 states have internal predecessors, (1164), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:17:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1174 transitions. [2024-11-08 17:17:32,477 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1174 transitions. Word has length 67 [2024-11-08 17:17:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:32,477 INFO L471 AbstractCegarLoop]: Abstraction has 1005 states and 1174 transitions. [2024-11-08 17:17:32,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 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 17:17:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1174 transitions. [2024-11-08 17:17:32,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:17:32,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:32,481 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:32,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:32,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:32,681 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:32,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1959171576, now seen corresponding path program 1 times [2024-11-08 17:17:32,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:32,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789555766] [2024-11-08 17:17:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:32,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:32,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:32,685 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:32,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 17:17:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:32,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:17:32,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:32,931 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 19 treesize of output 1 [2024-11-08 17:17:33,023 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 23 treesize of output 11 [2024-11-08 17:17:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:33,038 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:33,038 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:33,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789555766] [2024-11-08 17:17:33,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789555766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:33,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:33,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:17:33,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961475623] [2024-11-08 17:17:33,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:33,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:17:33,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:33,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:17:33,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:17:33,040 INFO L87 Difference]: Start difference. First operand 1005 states and 1174 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:17:35,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:35,734 INFO L93 Difference]: Finished difference Result 1023 states and 1200 transitions. [2024-11-08 17:17:35,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:17:35,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-08 17:17:35,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:35,739 INFO L225 Difference]: With dead ends: 1023 [2024-11-08 17:17:35,739 INFO L226 Difference]: Without dead ends: 1023 [2024-11-08 17:17:35,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:17:35,740 INFO L432 NwaCegarLoop]: 601 mSDtfsCounter, 6 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:35,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2566 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 17:17:35,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-11-08 17:17:35,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1014. [2024-11-08 17:17:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 792 states have (on average 1.4835858585858586) internal successors, (1175), 1005 states have internal predecessors, (1175), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-08 17:17:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1190 transitions. [2024-11-08 17:17:35,759 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1190 transitions. Word has length 75 [2024-11-08 17:17:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:35,760 INFO L471 AbstractCegarLoop]: Abstraction has 1014 states and 1190 transitions. [2024-11-08 17:17:35,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:17:35,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1190 transitions. [2024-11-08 17:17:35,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:17:35,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:35,761 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:35,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:35,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:35,962 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:35,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1959171575, now seen corresponding path program 1 times [2024-11-08 17:17:35,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:35,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881660793] [2024-11-08 17:17:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:35,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:35,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:35,964 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:35,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 17:17:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:36,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:17:36,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:36,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:17:36,248 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:36,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881660793] [2024-11-08 17:17:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881660793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:17:36,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:17:36,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:17:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535901003] [2024-11-08 17:17:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:17:36,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:17:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:17:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:17:36,251 INFO L87 Difference]: Start difference. First operand 1014 states and 1190 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:17:36,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:36,305 INFO L93 Difference]: Finished difference Result 1008 states and 1178 transitions. [2024-11-08 17:17:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:17:36,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-08 17:17:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:36,314 INFO L225 Difference]: With dead ends: 1008 [2024-11-08 17:17:36,314 INFO L226 Difference]: Without dead ends: 1008 [2024-11-08 17:17:36,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:17:36,315 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 0 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:36,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1822 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:17:36,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2024-11-08 17:17:36,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2024-11-08 17:17:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 786 states have (on average 1.484732824427481) internal successors, (1167), 1001 states have internal predecessors, (1167), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-08 17:17:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1178 transitions. [2024-11-08 17:17:36,342 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1178 transitions. Word has length 75 [2024-11-08 17:17:36,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:36,342 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1178 transitions. [2024-11-08 17:17:36,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 17:17:36,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1178 transitions. [2024-11-08 17:17:36,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 17:17:36,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:36,347 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:36,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:36,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:36,548 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:36,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:36,549 INFO L85 PathProgramCache]: Analyzing trace with hash 654159239, now seen corresponding path program 1 times [2024-11-08 17:17:36,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:36,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764145875] [2024-11-08 17:17:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:17:36,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:36,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:36,552 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:36,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 17:17:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:17:36,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:17:36,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:36,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:17:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:36,909 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:36,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764145875] [2024-11-08 17:17:36,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764145875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:17:36,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:17:36,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-08 17:17:36,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818675203] [2024-11-08 17:17:36,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:17:36,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:17:36,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:17:36,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:17:36,912 INFO L87 Difference]: Start difference. First operand 1008 states and 1178 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:17:37,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:17:37,149 INFO L93 Difference]: Finished difference Result 1020 states and 1195 transitions. [2024-11-08 17:17:37,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:17:37,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2024-11-08 17:17:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:17:37,153 INFO L225 Difference]: With dead ends: 1020 [2024-11-08 17:17:37,153 INFO L226 Difference]: Without dead ends: 1020 [2024-11-08 17:17:37,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:17:37,154 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 5 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:17:37,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 3031 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:17:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2024-11-08 17:17:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1018. [2024-11-08 17:17:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 795 states have (on average 1.4867924528301886) internal successors, (1182), 1010 states have internal predecessors, (1182), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-08 17:17:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1193 transitions. [2024-11-08 17:17:37,172 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1193 transitions. Word has length 76 [2024-11-08 17:17:37,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:17:37,173 INFO L471 AbstractCegarLoop]: Abstraction has 1018 states and 1193 transitions. [2024-11-08 17:17:37,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:17:37,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1193 transitions. [2024-11-08 17:17:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 17:17:37,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:17:37,174 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:17:37,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-08 17:17:37,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:37,375 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:17:37,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:17:37,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2079183304, now seen corresponding path program 2 times [2024-11-08 17:17:37,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:17:37,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943573618] [2024-11-08 17:17:37,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:17:37,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:17:37,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:17:37,377 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:17:37,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 17:17:47,420 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:17:47,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:17:47,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 17:17:47,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:47,629 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:17:47,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-08 17:17:47,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:17:47,949 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:17:47,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-08 17:17:48,018 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 33 treesize of output 15 [2024-11-08 17:17:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:17:48,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:17:48,171 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-08 17:17:48,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-08 17:17:48,229 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:17:48,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943573618] [2024-11-08 17:17:48,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943573618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:17:48,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [801774358] [2024-11-08 17:17:48,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:17:48,230 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:17:48,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:17:48,232 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:17:48,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-08 17:17:49,468 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:17:49,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:17:49,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:17:49,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:17:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:49,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:17:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:17:49,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [801774358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:17:49,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:17:49,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-08 17:17:49,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061899873] [2024-11-08 17:17:49,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:17:49,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:17:49,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:17:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:17:49,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=553, Unknown=6, NotChecked=0, Total=650 [2024-11-08 17:17:49,944 INFO L87 Difference]: Start difference. First operand 1018 states and 1193 transitions. Second operand has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 17:18:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:18:04,363 INFO L93 Difference]: Finished difference Result 1034 states and 1215 transitions. [2024-11-08 17:18:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 17:18:04,364 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2024-11-08 17:18:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:18:04,367 INFO L225 Difference]: With dead ends: 1034 [2024-11-08 17:18:04,367 INFO L226 Difference]: Without dead ends: 1030 [2024-11-08 17:18:04,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=416, Invalid=2332, Unknown=8, NotChecked=0, Total=2756 [2024-11-08 17:18:04,368 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 588 mSDsluCounter, 5925 mSDsCounter, 0 mSdLazyCounter, 5640 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 6262 SdHoareTripleChecker+Invalid, 5664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:18:04,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 6262 Invalid, 5664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 5640 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2024-11-08 17:18:04,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2024-11-08 17:18:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1026. [2024-11-08 17:18:04,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 804 states have (on average 1.4825870646766168) internal successors, (1192), 1018 states have internal predecessors, (1192), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-08 17:18:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1203 transitions. [2024-11-08 17:18:04,386 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1203 transitions. Word has length 79 [2024-11-08 17:18:04,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:18:04,386 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1203 transitions. [2024-11-08 17:18:04,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-08 17:18:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1203 transitions. [2024-11-08 17:18:04,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 17:18:04,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:18:04,388 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:04,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-08 17:18:04,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 17:18:04,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:04,789 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:18:04,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:04,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2127369879, now seen corresponding path program 1 times [2024-11-08 17:18:04,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:18:04,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185763441] [2024-11-08 17:18:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:18:04,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:04,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:18:04,791 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:18:04,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 17:18:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:18:05,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 17:18:05,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:05,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:18:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:06,000 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:18:06,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185763441] [2024-11-08 17:18:06,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185763441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:18:06,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:18:06,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-08 17:18:06,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290492620] [2024-11-08 17:18:06,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:18:06,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:18:06,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:18:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:18:06,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:18:06,002 INFO L87 Difference]: Start difference. First operand 1026 states and 1203 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:18:09,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:18:09,654 INFO L93 Difference]: Finished difference Result 1050 states and 1242 transitions. [2024-11-08 17:18:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 17:18:09,656 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2024-11-08 17:18:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:18:09,658 INFO L225 Difference]: With dead ends: 1050 [2024-11-08 17:18:09,658 INFO L226 Difference]: Without dead ends: 1044 [2024-11-08 17:18:09,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 17:18:09,660 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 22 mSDsluCounter, 7874 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 8483 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:18:09,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 8483 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 17:18:09,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2024-11-08 17:18:09,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2024-11-08 17:18:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 822 states have (on average 1.4781021897810218) internal successors, (1215), 1036 states have internal predecessors, (1215), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-08 17:18:09,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1226 transitions. [2024-11-08 17:18:09,676 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1226 transitions. Word has length 85 [2024-11-08 17:18:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:18:09,677 INFO L471 AbstractCegarLoop]: Abstraction has 1044 states and 1226 transitions. [2024-11-08 17:18:09,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 17:18:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1226 transitions. [2024-11-08 17:18:09,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 17:18:09,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:18:09,679 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:18:09,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-08 17:18:09,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:09,880 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-08 17:18:09,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:18:09,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1691455319, now seen corresponding path program 2 times [2024-11-08 17:18:09,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:18:09,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590622488] [2024-11-08 17:18:09,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:18:09,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:18:09,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:18:09,884 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:18:09,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 17:18:26,994 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:18:26,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:18:27,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-08 17:18:27,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:27,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:18:27,191 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:18:27,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-08 17:18:27,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-08 17:18:27,238 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 17:18:27,374 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 22 treesize of output 10 [2024-11-08 17:18:27,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:18:28,066 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:18:28,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-08 17:18:28,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-08 17:18:28,152 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 31 treesize of output 13 [2024-11-08 17:18:28,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-08 17:18:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-08 17:18:28,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:18:28,900 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1267 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1267) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_1266 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1267 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1267) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1266) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:18:28,906 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:18:28,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590622488] [2024-11-08 17:18:28,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590622488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:18:28,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1235993047] [2024-11-08 17:18:28,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:18:28,906 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:18:28,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:18:28,908 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:18:28,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f1ec48-389a-4e87-b303-e916cf6a5a3c/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-08 17:18:30,671 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:18:30,671 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:18:30,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:18:30,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:18:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:32,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:18:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:18:34,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1235993047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:18:34,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:18:34,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-08 17:18:34,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455256570] [2024-11-08 17:18:34,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:18:34,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-08 17:18:34,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:18:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-08 17:18:34,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-08 17:18:34,915 INFO L87 Difference]: Start difference. First operand 1044 states and 1226 transitions. Second operand has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)