./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a 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_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU --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 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:08:16,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:08:17,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:08:17,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:08:17,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:08:17,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:08:17,191 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:08:17,192 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:08:17,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:08:17,193 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:08:17,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:08:17,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:08:17,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:08:17,198 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:08:17,199 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:08:17,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:08:17,203 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:08:17,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:08:17,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:08:17,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:08:17,205 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:08:17,206 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:08:17,206 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:08:17,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:08:17,207 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:08:17,210 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:08:17,210 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:08:17,211 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:08:17,211 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:08:17,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:08:17,212 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:08:17,212 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:08:17,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:08:17,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:08:17,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:08:17,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:08:17,214 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:08:17,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:08:17,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:08:17,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:08:17,217 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:08:17,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:08:17,218 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_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2024-10-31 22:08:17,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:08:17,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:08:17,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:08:17,658 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:08:17,658 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:08:17,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i Unable to find full path for "g++" [2024-10-31 22:08:19,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:08:20,274 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:08:20,275 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2024-10-31 22:08:20,298 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/data/10baf3c84/3c945d0853944b9693f4e35d4d40f566/FLAG0438829cc [2024-10-31 22:08:20,318 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/data/10baf3c84/3c945d0853944b9693f4e35d4d40f566 [2024-10-31 22:08:20,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:08:20,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:08:20,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:08:20,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:08:20,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:08:20,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:08:20" (1/1) ... [2024-10-31 22:08:20,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b379d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:20, skipping insertion in model container [2024-10-31 22:08:20,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:08:20" (1/1) ... [2024-10-31 22:08:20,414 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:08:21,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:08:21,046 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:08:21,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:08:21,210 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:08:21,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21 WrapperNode [2024-10-31 22:08:21,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:08:21,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:08:21,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:08:21,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:08:21,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,314 INFO L138 Inliner]: procedures = 184, calls = 145, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 236 [2024-10-31 22:08:21,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:08:21,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:08:21,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:08:21,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:08:21,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,349 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,404 INFO L175 MemorySlicer]: Split 91 memory accesses to 3 slices as follows [2, 19, 70]. 77 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 9, 0]. The 44 writes are split as follows [0, 6, 38]. [2024-10-31 22:08:21,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,460 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:08:21,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:08:21,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:08:21,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:08:21,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (1/1) ... [2024-10-31 22:08:21,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:08:21,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:08:21,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:08:21,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66a8443c-3fb1-4251-b0c4-a02128b7ed65/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:08:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:08:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:08:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:08:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-10-31 22:08:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-10-31 22:08:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2024-10-31 22:08:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2024-10-31 22:08:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:08:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:08:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:08:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:08:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2024-10-31 22:08:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2024-10-31 22:08:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:08:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:08:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:08:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-31 22:08:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:08:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2024-10-31 22:08:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2024-10-31 22:08:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2024-10-31 22:08:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2024-10-31 22:08:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2024-10-31 22:08:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2024-10-31 22:08:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:08:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:08:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-31 22:08:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2024-10-31 22:08:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2024-10-31 22:08:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:08:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2024-10-31 22:08:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2024-10-31 22:08:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:08:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:08:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:08:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2024-10-31 22:08:21,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2024-10-31 22:08:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:08:21,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:08:21,806 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:08:21,809 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:08:22,873 INFO L? ?]: Removed 322 outVars from TransFormulas that were not future-live. [2024-10-31 22:08:22,873 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:08:22,901 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:08:22,901 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:08:22,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:22 BoogieIcfgContainer [2024-10-31 22:08:22,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:08:22,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:08:22,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:08:22,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:08:22,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:08:20" (1/3) ... [2024-10-31 22:08:22,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a9c2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:22, skipping insertion in model container [2024-10-31 22:08:22,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:08:21" (2/3) ... [2024-10-31 22:08:22,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40a9c2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:08:22, skipping insertion in model container [2024-10-31 22:08:22,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:08:22" (3/3) ... [2024-10-31 22:08:22,913 INFO L112 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2024-10-31 22:08:22,934 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:08:22,935 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 158 error locations. [2024-10-31 22:08:22,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:08:23,005 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;@45888da1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:08:23,005 INFO L334 AbstractCegarLoop]: Starting to check reachability of 158 error locations. [2024-10-31 22:08:23,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 387 states, 190 states have (on average 1.9842105263157894) internal successors, (377), 348 states have internal predecessors, (377), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-31 22:08:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:08:23,023 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:23,024 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:23,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:23,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:23,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1798451593, now seen corresponding path program 1 times [2024-10-31 22:08:23,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:23,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280887382] [2024-10-31 22:08:23,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:23,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:23,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:23,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:23,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280887382] [2024-10-31 22:08:23,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280887382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:23,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:23,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:23,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876231602] [2024-10-31 22:08:23,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:23,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:23,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:23,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:23,504 INFO L87 Difference]: Start difference. First operand has 387 states, 190 states have (on average 1.9842105263157894) internal successors, (377), 348 states have internal predecessors, (377), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-31 22:08:24,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:24,643 INFO L93 Difference]: Finished difference Result 473 states and 579 transitions. [2024-10-31 22:08:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:08:24,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 7 [2024-10-31 22:08:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:24,664 INFO L225 Difference]: With dead ends: 473 [2024-10-31 22:08:24,665 INFO L226 Difference]: Without dead ends: 471 [2024-10-31 22:08:24,667 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 [2024-10-31 22:08:24,671 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 582 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:24,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 389 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 22:08:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-10-31 22:08:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 380. [2024-10-31 22:08:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 202 states have (on average 1.8415841584158417) internal successors, (372), 336 states have internal predecessors, (372), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2024-10-31 22:08:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 441 transitions. [2024-10-31 22:08:24,786 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 441 transitions. Word has length 7 [2024-10-31 22:08:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:24,787 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 441 transitions. [2024-10-31 22:08:24,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-31 22:08:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 441 transitions. [2024-10-31 22:08:24,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:08:24,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:24,789 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:24,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:08:24,790 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:24,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:24,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1798451592, now seen corresponding path program 1 times [2024-10-31 22:08:24,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:24,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40751203] [2024-10-31 22:08:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:24,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:25,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:25,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:25,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40751203] [2024-10-31 22:08:25,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40751203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:25,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:25,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:08:25,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889860027] [2024-10-31 22:08:25,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:25,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:08:25,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:08:25,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:08:25,139 INFO L87 Difference]: Start difference. First operand 380 states and 441 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-31 22:08:25,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:25,767 INFO L93 Difference]: Finished difference Result 422 states and 509 transitions. [2024-10-31 22:08:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:08:25,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 7 [2024-10-31 22:08:25,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:25,771 INFO L225 Difference]: With dead ends: 422 [2024-10-31 22:08:25,771 INFO L226 Difference]: Without dead ends: 422 [2024-10-31 22:08:25,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:08:25,773 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 169 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:25,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 747 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:08:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-10-31 22:08:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 377. [2024-10-31 22:08:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 204 states have (on average 1.803921568627451) internal successors, (368), 332 states have internal predecessors, (368), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2024-10-31 22:08:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 437 transitions. [2024-10-31 22:08:25,798 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 437 transitions. Word has length 7 [2024-10-31 22:08:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:25,799 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 437 transitions. [2024-10-31 22:08:25,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-10-31 22:08:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 437 transitions. [2024-10-31 22:08:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 22:08:25,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:25,800 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:25,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:08:25,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:25,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash -996852037, now seen corresponding path program 1 times [2024-10-31 22:08:25,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:25,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189223542] [2024-10-31 22:08:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:25,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:26,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:26,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:26,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189223542] [2024-10-31 22:08:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189223542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:26,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:26,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:08:26,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406669756] [2024-10-31 22:08:26,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:26,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:08:26,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:08:26,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:08:26,043 INFO L87 Difference]: Start difference. First operand 377 states and 437 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-10-31 22:08:26,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:26,907 INFO L93 Difference]: Finished difference Result 421 states and 508 transitions. [2024-10-31 22:08:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:08:26,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2024-10-31 22:08:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:26,913 INFO L225 Difference]: With dead ends: 421 [2024-10-31 22:08:26,914 INFO L226 Difference]: Without dead ends: 421 [2024-10-31 22:08:26,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:08:26,918 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 158 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:26,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1217 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:08:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-10-31 22:08:26,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 376. [2024-10-31 22:08:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 204 states have (on average 1.7990196078431373) internal successors, (367), 331 states have internal predecessors, (367), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2024-10-31 22:08:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 436 transitions. [2024-10-31 22:08:26,958 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 436 transitions. Word has length 11 [2024-10-31 22:08:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:26,958 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 436 transitions. [2024-10-31 22:08:26,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-10-31 22:08:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 436 transitions. [2024-10-31 22:08:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 22:08:26,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:26,960 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:26,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:08:26,960 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:26,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:26,963 INFO L85 PathProgramCache]: Analyzing trace with hash -996852036, now seen corresponding path program 1 times [2024-10-31 22:08:26,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:26,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403643457] [2024-10-31 22:08:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:26,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:27,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:27,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:27,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403643457] [2024-10-31 22:08:27,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403643457] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:27,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:27,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:08:27,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929015020] [2024-10-31 22:08:27,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:27,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:08:27,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:27,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:08:27,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:08:27,327 INFO L87 Difference]: Start difference. First operand 376 states and 436 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-10-31 22:08:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:28,209 INFO L93 Difference]: Finished difference Result 420 states and 507 transitions. [2024-10-31 22:08:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:08:28,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2024-10-31 22:08:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:28,212 INFO L225 Difference]: With dead ends: 420 [2024-10-31 22:08:28,213 INFO L226 Difference]: Without dead ends: 420 [2024-10-31 22:08:28,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:08:28,214 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 157 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:28,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1190 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-31 22:08:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-10-31 22:08:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 375. [2024-10-31 22:08:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 204 states have (on average 1.7941176470588236) internal successors, (366), 330 states have internal predecessors, (366), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2024-10-31 22:08:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 435 transitions. [2024-10-31 22:08:28,234 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 435 transitions. Word has length 11 [2024-10-31 22:08:28,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:28,234 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 435 transitions. [2024-10-31 22:08:28,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-10-31 22:08:28,235 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 435 transitions. [2024-10-31 22:08:28,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-31 22:08:28,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:28,236 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:28,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:08:28,236 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:28,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash -880937440, now seen corresponding path program 1 times [2024-10-31 22:08:28,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:28,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891194175] [2024-10-31 22:08:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:28,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:28,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891194175] [2024-10-31 22:08:28,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891194175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:28,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:28,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:28,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84424647] [2024-10-31 22:08:28,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:28,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:28,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:28,328 INFO L87 Difference]: Start difference. First operand 375 states and 435 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-10-31 22:08:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:28,830 INFO L93 Difference]: Finished difference Result 419 states and 506 transitions. [2024-10-31 22:08:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:08:28,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 17 [2024-10-31 22:08:28,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:28,843 INFO L225 Difference]: With dead ends: 419 [2024-10-31 22:08:28,843 INFO L226 Difference]: Without dead ends: 419 [2024-10-31 22:08:28,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:28,844 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 157 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:28,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 769 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:08:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-10-31 22:08:28,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 374. [2024-10-31 22:08:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 204 states have (on average 1.7892156862745099) internal successors, (365), 329 states have internal predecessors, (365), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2024-10-31 22:08:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 434 transitions. [2024-10-31 22:08:28,869 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 434 transitions. Word has length 17 [2024-10-31 22:08:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:28,869 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 434 transitions. [2024-10-31 22:08:28,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-10-31 22:08:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 434 transitions. [2024-10-31 22:08:28,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-31 22:08:28,871 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:28,872 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:08:28,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:08:28,875 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:28,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash -880937439, now seen corresponding path program 1 times [2024-10-31 22:08:28,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:28,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979248279] [2024-10-31 22:08:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:28,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:29,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:29,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:29,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979248279] [2024-10-31 22:08:29,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979248279] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:29,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:29,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:08:29,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533453151] [2024-10-31 22:08:29,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:29,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:08:29,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:29,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:08:29,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:29,026 INFO L87 Difference]: Start difference. First operand 374 states and 434 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-10-31 22:08:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:29,515 INFO L93 Difference]: Finished difference Result 418 states and 505 transitions. [2024-10-31 22:08:29,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:08:29,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 17 [2024-10-31 22:08:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:29,519 INFO L225 Difference]: With dead ends: 418 [2024-10-31 22:08:29,520 INFO L226 Difference]: Without dead ends: 418 [2024-10-31 22:08:29,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:08:29,521 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 157 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:29,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 752 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:08:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-10-31 22:08:29,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 373. [2024-10-31 22:08:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 204 states have (on average 1.7843137254901962) internal successors, (364), 328 states have internal predecessors, (364), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2024-10-31 22:08:29,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 433 transitions. [2024-10-31 22:08:29,569 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 433 transitions. Word has length 17 [2024-10-31 22:08:29,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:29,569 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 433 transitions. [2024-10-31 22:08:29,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-10-31 22:08:29,570 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 433 transitions. [2024-10-31 22:08:29,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-31 22:08:29,571 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:29,571 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] [2024-10-31 22:08:29,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:08:29,572 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:29,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:29,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1756576041, now seen corresponding path program 1 times [2024-10-31 22:08:29,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:29,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761645929] [2024-10-31 22:08:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:29,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:29,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:29,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:29,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761645929] [2024-10-31 22:08:29,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761645929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:29,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:29,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:08:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639393023] [2024-10-31 22:08:29,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:29,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:08:29,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:08:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:08:29,894 INFO L87 Difference]: Start difference. First operand 373 states and 433 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 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) [2024-10-31 22:08:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:31,103 INFO L93 Difference]: Finished difference Result 443 states and 547 transitions. [2024-10-31 22:08:31,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:08:31,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 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 20 [2024-10-31 22:08:31,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:31,107 INFO L225 Difference]: With dead ends: 443 [2024-10-31 22:08:31,107 INFO L226 Difference]: Without dead ends: 443 [2024-10-31 22:08:31,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:08:31,109 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 931 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:31,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 403 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 22:08:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-10-31 22:08:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 354. [2024-10-31 22:08:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 204 states have (on average 1.6813725490196079) internal successors, (343), 309 states have internal predecessors, (343), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2024-10-31 22:08:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 412 transitions. [2024-10-31 22:08:31,135 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 412 transitions. Word has length 20 [2024-10-31 22:08:31,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:31,135 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 412 transitions. [2024-10-31 22:08:31,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 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) [2024-10-31 22:08:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 412 transitions. [2024-10-31 22:08:31,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-31 22:08:31,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:31,136 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] [2024-10-31 22:08:31,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:08:31,138 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:31,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:31,139 INFO L85 PathProgramCache]: Analyzing trace with hash 83868256, now seen corresponding path program 1 times [2024-10-31 22:08:31,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:31,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051529240] [2024-10-31 22:08:31,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:31,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:31,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:31,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:31,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:31,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051529240] [2024-10-31 22:08:31,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051529240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:31,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:31,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:08:31,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59904959] [2024-10-31 22:08:31,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:31,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:08:31,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:31,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:08:31,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:08:31,391 INFO L87 Difference]: Start difference. First operand 354 states and 412 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:08:32,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:32,422 INFO L93 Difference]: Finished difference Result 432 states and 538 transitions. [2024-10-31 22:08:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:08:32,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-10-31 22:08:32,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:32,427 INFO L225 Difference]: With dead ends: 432 [2024-10-31 22:08:32,427 INFO L226 Difference]: Without dead ends: 432 [2024-10-31 22:08:32,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:08:32,432 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 221 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:32,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1497 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-31 22:08:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-10-31 22:08:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 375. [2024-10-31 22:08:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 222 states have (on average 1.662162162162162) internal successors, (369), 327 states have internal predecessors, (369), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (40), 33 states have call predecessors, (40), 33 states have call successors, (40) [2024-10-31 22:08:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 442 transitions. [2024-10-31 22:08:32,449 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 442 transitions. Word has length 26 [2024-10-31 22:08:32,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:32,450 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 442 transitions. [2024-10-31 22:08:32,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:08:32,450 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 442 transitions. [2024-10-31 22:08:32,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-31 22:08:32,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:32,451 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] [2024-10-31 22:08:32,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:08:32,452 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:32,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:32,452 INFO L85 PathProgramCache]: Analyzing trace with hash 83868257, now seen corresponding path program 1 times [2024-10-31 22:08:32,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:32,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519234798] [2024-10-31 22:08:32,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:32,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:32,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:32,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:32,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519234798] [2024-10-31 22:08:32,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519234798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:32,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:32,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:08:32,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20611048] [2024-10-31 22:08:32,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:32,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:08:32,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:32,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:08:32,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:08:32,815 INFO L87 Difference]: Start difference. First operand 375 states and 442 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:08:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:33,855 INFO L93 Difference]: Finished difference Result 431 states and 537 transitions. [2024-10-31 22:08:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:08:33,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-10-31 22:08:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:33,859 INFO L225 Difference]: With dead ends: 431 [2024-10-31 22:08:33,859 INFO L226 Difference]: Without dead ends: 431 [2024-10-31 22:08:33,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:08:33,860 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 219 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:33,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1531 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-31 22:08:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-10-31 22:08:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 375. [2024-10-31 22:08:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 222 states have (on average 1.6576576576576576) internal successors, (368), 327 states have internal predecessors, (368), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (40), 33 states have call predecessors, (40), 33 states have call successors, (40) [2024-10-31 22:08:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 441 transitions. [2024-10-31 22:08:33,877 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 441 transitions. Word has length 26 [2024-10-31 22:08:33,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:33,877 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 441 transitions. [2024-10-31 22:08:33,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:08:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 441 transitions. [2024-10-31 22:08:33,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-31 22:08:33,879 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:33,879 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] [2024-10-31 22:08:33,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:08:33,879 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:33,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:33,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1697872296, now seen corresponding path program 1 times [2024-10-31 22:08:33,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:33,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462827165] [2024-10-31 22:08:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:33,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:34,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:34,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:34,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462827165] [2024-10-31 22:08:34,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462827165] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:34,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:34,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:08:34,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689153034] [2024-10-31 22:08:34,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:34,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:08:34,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:34,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:08:34,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:08:34,262 INFO L87 Difference]: Start difference. First operand 375 states and 441 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:08:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:34,839 INFO L93 Difference]: Finished difference Result 468 states and 561 transitions. [2024-10-31 22:08:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:08:34,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-10-31 22:08:34,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:34,842 INFO L225 Difference]: With dead ends: 468 [2024-10-31 22:08:34,843 INFO L226 Difference]: Without dead ends: 468 [2024-10-31 22:08:34,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:08:34,845 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 237 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:34,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1775 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:08:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-10-31 22:08:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 452. [2024-10-31 22:08:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 279 states have (on average 1.5448028673835126) internal successors, (431), 382 states have internal predecessors, (431), 41 states have call successors, (41), 18 states have call predecessors, (41), 26 states have return successors, (82), 51 states have call predecessors, (82), 41 states have call successors, (82) [2024-10-31 22:08:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 554 transitions. [2024-10-31 22:08:34,874 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 554 transitions. Word has length 27 [2024-10-31 22:08:34,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:34,875 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 554 transitions. [2024-10-31 22:08:34,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:08:34,875 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 554 transitions. [2024-10-31 22:08:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-31 22:08:34,876 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:34,877 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] [2024-10-31 22:08:34,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:08:34,877 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:34,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:34,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1466731203, now seen corresponding path program 1 times [2024-10-31 22:08:34,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:34,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990987387] [2024-10-31 22:08:34,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:34,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:35,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:35,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 22:08:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:35,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:35,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990987387] [2024-10-31 22:08:35,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990987387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:35,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:35,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:08:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018874414] [2024-10-31 22:08:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:35,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:08:35,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:35,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:08:35,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:08:35,069 INFO L87 Difference]: Start difference. First operand 452 states and 554 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:08:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:35,555 INFO L93 Difference]: Finished difference Result 468 states and 569 transitions. [2024-10-31 22:08:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:08:35,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2024-10-31 22:08:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:35,558 INFO L225 Difference]: With dead ends: 468 [2024-10-31 22:08:35,558 INFO L226 Difference]: Without dead ends: 466 [2024-10-31 22:08:35,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:08:35,559 INFO L432 NwaCegarLoop]: 340 mSDtfsCounter, 159 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:35,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1312 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:08:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-10-31 22:08:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 462. [2024-10-31 22:08:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 287 states have (on average 1.5331010452961673) internal successors, (440), 391 states have internal predecessors, (440), 41 states have call successors, (41), 19 states have call predecessors, (41), 28 states have return successors, (82), 51 states have call predecessors, (82), 41 states have call successors, (82) [2024-10-31 22:08:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 563 transitions. [2024-10-31 22:08:35,575 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 563 transitions. Word has length 38 [2024-10-31 22:08:35,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:35,575 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 563 transitions. [2024-10-31 22:08:35,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-31 22:08:35,576 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 563 transitions. [2024-10-31 22:08:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-31 22:08:35,576 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:35,577 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] [2024-10-31 22:08:35,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:08:35,577 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:35,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:35,577 INFO L85 PathProgramCache]: Analyzing trace with hash -850465204, now seen corresponding path program 1 times [2024-10-31 22:08:35,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:35,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140383324] [2024-10-31 22:08:35,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:35,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:35,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:35,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:08:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:36,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-31 22:08:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:36,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:36,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:36,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140383324] [2024-10-31 22:08:36,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140383324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:36,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:36,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-31 22:08:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321232159] [2024-10-31 22:08:36,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:36,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:08:36,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:08:36,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:08:36,130 INFO L87 Difference]: Start difference. First operand 462 states and 563 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:08:37,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:37,721 INFO L93 Difference]: Finished difference Result 493 states and 615 transitions. [2024-10-31 22:08:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:08:37,722 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2024-10-31 22:08:37,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:37,727 INFO L225 Difference]: With dead ends: 493 [2024-10-31 22:08:37,728 INFO L226 Difference]: Without dead ends: 486 [2024-10-31 22:08:37,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:08:37,729 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 181 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:37,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 2370 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 22:08:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2024-10-31 22:08:37,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 462. [2024-10-31 22:08:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 287 states have (on average 1.529616724738676) internal successors, (439), 391 states have internal predecessors, (439), 41 states have call successors, (41), 19 states have call predecessors, (41), 28 states have return successors, (82), 51 states have call predecessors, (82), 41 states have call successors, (82) [2024-10-31 22:08:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 562 transitions. [2024-10-31 22:08:37,751 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 562 transitions. Word has length 37 [2024-10-31 22:08:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:37,751 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 562 transitions. [2024-10-31 22:08:37,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:08:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 562 transitions. [2024-10-31 22:08:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-31 22:08:37,753 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:37,753 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] [2024-10-31 22:08:37,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:08:37,753 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:37,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:37,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1140093467, now seen corresponding path program 1 times [2024-10-31 22:08:37,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:37,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974500278] [2024-10-31 22:08:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:37,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:37,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:38,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 22:08:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:38,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:38,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974500278] [2024-10-31 22:08:38,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974500278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:38,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:38,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-31 22:08:38,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16390948] [2024-10-31 22:08:38,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:38,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:08:38,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:38,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:08:38,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:08:38,142 INFO L87 Difference]: Start difference. First operand 462 states and 562 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:08:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:40,306 INFO L93 Difference]: Finished difference Result 621 states and 847 transitions. [2024-10-31 22:08:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-31 22:08:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2024-10-31 22:08:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:40,311 INFO L225 Difference]: With dead ends: 621 [2024-10-31 22:08:40,312 INFO L226 Difference]: Without dead ends: 617 [2024-10-31 22:08:40,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=636, Unknown=0, NotChecked=0, Total=812 [2024-10-31 22:08:40,313 INFO L432 NwaCegarLoop]: 465 mSDtfsCounter, 649 mSDsluCounter, 2224 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:40,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 2689 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-31 22:08:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-10-31 22:08:40,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 541. [2024-10-31 22:08:40,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 349 states have (on average 1.518624641833811) internal successors, (530), 448 states have internal predecessors, (530), 51 states have call successors, (51), 24 states have call predecessors, (51), 35 states have return successors, (123), 68 states have call predecessors, (123), 51 states have call successors, (123) [2024-10-31 22:08:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 704 transitions. [2024-10-31 22:08:40,342 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 704 transitions. Word has length 40 [2024-10-31 22:08:40,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:40,342 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 704 transitions. [2024-10-31 22:08:40,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 9 states have internal predecessors, (33), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:08:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 704 transitions. [2024-10-31 22:08:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-31 22:08:40,344 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:40,344 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] [2024-10-31 22:08:40,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:08:40,344 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:40,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash 884069767, now seen corresponding path program 1 times [2024-10-31 22:08:40,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:40,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455789742] [2024-10-31 22:08:40,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:40,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:41,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:41,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 22:08:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:41,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:41,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455789742] [2024-10-31 22:08:41,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455789742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:41,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:41,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 22:08:41,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688891072] [2024-10-31 22:08:41,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:41,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:08:41,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:41,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:08:41,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:08:41,552 INFO L87 Difference]: Start difference. First operand 541 states and 704 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:08:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:08:43,226 INFO L93 Difference]: Finished difference Result 834 states and 1187 transitions. [2024-10-31 22:08:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:08:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-10-31 22:08:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:08:43,233 INFO L225 Difference]: With dead ends: 834 [2024-10-31 22:08:43,233 INFO L226 Difference]: Without dead ends: 832 [2024-10-31 22:08:43,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:08:43,234 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 1052 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:08:43,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1470 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:08:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2024-10-31 22:08:43,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 676. [2024-10-31 22:08:43,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 454 states have (on average 1.4823788546255507) internal successors, (673), 554 states have internal predecessors, (673), 66 states have call successors, (66), 32 states have call predecessors, (66), 50 states have return successors, (188), 89 states have call predecessors, (188), 66 states have call successors, (188) [2024-10-31 22:08:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 927 transitions. [2024-10-31 22:08:43,265 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 927 transitions. Word has length 42 [2024-10-31 22:08:43,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:08:43,265 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 927 transitions. [2024-10-31 22:08:43,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:08:43,266 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 927 transitions. [2024-10-31 22:08:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-31 22:08:43,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:08:43,266 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] [2024-10-31 22:08:43,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:08:43,267 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting system_initializeErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 155 more)] === [2024-10-31 22:08:43,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:08:43,267 INFO L85 PathProgramCache]: Analyzing trace with hash 884069768, now seen corresponding path program 1 times [2024-10-31 22:08:43,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:08:43,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114000174] [2024-10-31 22:08:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:08:43,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:08:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:44,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:08:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:44,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 22:08:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:08:44,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:08:44,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:08:44,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114000174] [2024-10-31 22:08:44,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114000174] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:08:44,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:08:44,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-31 22:08:44,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289827645] [2024-10-31 22:08:44,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:08:44,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:08:44,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:44,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:08:44,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:08:44,940 INFO L87 Difference]: Start difference. First operand 676 states and 927 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)