./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13ad8bc9cfa3954c0bae4db0509cb11733a45600a9e4ff56ca5bdd4aceeb1fc0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:22:58,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:22:58,317 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:22:58,323 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:22:58,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:22:58,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:22:58,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:22:58,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:22:58,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:22:58,393 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:22:58,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:22:58,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:22:58,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:22:58,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:22:58,396 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:22:58,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:22:58,397 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:22:58,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:22:58,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:22:58,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:22:58,402 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:22:58,403 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:22:58,403 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:22:58,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:22:58,404 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:22:58,404 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:22:58,405 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:22:58,405 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:22:58,405 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:22:58,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:22:58,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:22:58,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:22:58,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:22:58,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:22:58,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:22:58,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:22:58,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:22:58,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:22:58,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:22:58,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:22:58,416 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:22:58,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:22:58,418 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_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ad8bc9cfa3954c0bae4db0509cb11733a45600a9e4ff56ca5bdd4aceeb1fc0 [2024-11-08 17:22:58,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:22:58,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:22:58,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:22:58,909 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:22:58,910 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:22:58,911 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c Unable to find full path for "g++" [2024-11-08 17:23:01,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:23:01,750 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:23:01,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2024-11-08 17:23:01,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/data/b8ec4213d/902149a2f2704c1797a964f57537751a/FLAG00fb311b2 [2024-11-08 17:23:01,781 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/data/b8ec4213d/902149a2f2704c1797a964f57537751a [2024-11-08 17:23:01,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:23:01,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:23:01,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:23:01,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:23:01,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:23:01,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:23:01" (1/1) ... [2024-11-08 17:23:01,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fd30bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:01, skipping insertion in model container [2024-11-08 17:23:01,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:23:01" (1/1) ... [2024-11-08 17:23:01,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:23:02,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:23:02,083 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:23:02,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:23:02,133 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:23:02,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02 WrapperNode [2024-11-08 17:23:02,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:23:02,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:23:02,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:23:02,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:23:02,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,196 INFO L138 Inliner]: procedures = 9, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2024-11-08 17:23:02,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:23:02,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:23:02,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:23:02,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:23:02,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,216 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,234 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [3, 2]. 60 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 2 writes are split as follows [1, 1]. [2024-11-08 17:23:02,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,248 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:23:02,255 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:23:02,256 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:23:02,256 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:23:02,257 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (1/1) ... [2024-11-08 17:23:02,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:23:02,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:02,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:23:02,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:23:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:23:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:23:02,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:23:02,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:23:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:23:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:23:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:23:02,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:23:02,461 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:23:02,464 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:23:02,948 INFO L? ?]: Removed 49 outVars from TransFormulas that were not future-live. [2024-11-08 17:23:02,948 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:23:02,966 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:23:02,966 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:23:02,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:23:02 BoogieIcfgContainer [2024-11-08 17:23:02,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:23:02,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:23:02,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:23:02,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:23:02,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:23:01" (1/3) ... [2024-11-08 17:23:02,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4e518f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:23:02, skipping insertion in model container [2024-11-08 17:23:02,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:23:02" (2/3) ... [2024-11-08 17:23:02,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4e518f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:23:02, skipping insertion in model container [2024-11-08 17:23:02,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:23:02" (3/3) ... [2024-11-08 17:23:02,985 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2.c [2024-11-08 17:23:03,010 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:23:03,011 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-11-08 17:23:03,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:23:03,085 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;@141c7a26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:23:03,085 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-08 17:23:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 40 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 17:23:03,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:03,098 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:03,099 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:03,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1805952521, now seen corresponding path program 1 times [2024-11-08 17:23:03,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:03,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185984927] [2024-11-08 17:23:03,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:03,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185984927] [2024-11-08 17:23:03,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185984927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:03,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:03,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:23:03,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865970695] [2024-11-08 17:23:03,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:03,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:23:03,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:03,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:23:03,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:23:03,759 INFO L87 Difference]: Start difference. First operand has 41 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 40 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:04,001 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-11-08 17:23:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:23:04,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-08 17:23:04,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:04,016 INFO L225 Difference]: With dead ends: 57 [2024-11-08 17:23:04,016 INFO L226 Difference]: Without dead ends: 55 [2024-11-08 17:23:04,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:23:04,026 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 35 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:04,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:23:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-08 17:23:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2024-11-08 17:23:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 30 states have (on average 1.6) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2024-11-08 17:23:04,083 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 7 [2024-11-08 17:23:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:04,084 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2024-11-08 17:23:04,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2024-11-08 17:23:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 17:23:04,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:04,086 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:04,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:23:04,088 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:04,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash 366855867, now seen corresponding path program 1 times [2024-11-08 17:23:04,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:04,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129271838] [2024-11-08 17:23:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:04,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:04,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:04,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129271838] [2024-11-08 17:23:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129271838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:04,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:04,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:23:04,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668128078] [2024-11-08 17:23:04,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:04,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:23:04,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:04,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:23:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:23:04,364 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:04,517 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-11-08 17:23:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:23:04,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-08 17:23:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:04,519 INFO L225 Difference]: With dead ends: 51 [2024-11-08 17:23:04,520 INFO L226 Difference]: Without dead ends: 51 [2024-11-08 17:23:04,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:23:04,522 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:04,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 111 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:23:04,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-08 17:23:04,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2024-11-08 17:23:04,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.5625) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2024-11-08 17:23:04,531 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 9 [2024-11-08 17:23:04,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:04,531 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2024-11-08 17:23:04,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2024-11-08 17:23:04,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 17:23:04,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:04,533 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:04,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:23:04,534 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:04,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1366034607, now seen corresponding path program 1 times [2024-11-08 17:23:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:04,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715720185] [2024-11-08 17:23:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:04,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:04,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:04,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715720185] [2024-11-08 17:23:04,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715720185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:04,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:04,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 17:23:04,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828392529] [2024-11-08 17:23:04,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:04,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:23:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:04,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:23:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:23:04,652 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:04,730 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2024-11-08 17:23:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:23:04,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-08 17:23:04,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:04,732 INFO L225 Difference]: With dead ends: 52 [2024-11-08 17:23:04,733 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 17:23:04,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:23:04,737 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:04,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 159 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:23:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 17:23:04,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2024-11-08 17:23:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:04,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2024-11-08 17:23:04,760 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 12 [2024-11-08 17:23:04,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:04,760 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2024-11-08 17:23:04,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-11-08 17:23:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 17:23:04,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:04,762 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:04,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:23:04,763 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:04,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:04,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1366032685, now seen corresponding path program 1 times [2024-11-08 17:23:04,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:04,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540748998] [2024-11-08 17:23:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:04,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:05,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540748998] [2024-11-08 17:23:05,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540748998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:05,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:05,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:23:05,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459280934] [2024-11-08 17:23:05,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:05,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:23:05,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:23:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:23:05,045 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:05,115 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2024-11-08 17:23:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:23:05,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-08 17:23:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:05,117 INFO L225 Difference]: With dead ends: 46 [2024-11-08 17:23:05,117 INFO L226 Difference]: Without dead ends: 46 [2024-11-08 17:23:05,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:23:05,120 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:05,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 36 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:23:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-08 17:23:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-08 17:23:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2024-11-08 17:23:05,128 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 12 [2024-11-08 17:23:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:05,128 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2024-11-08 17:23:05,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2024-11-08 17:23:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 17:23:05,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:05,130 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:05,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:23:05,131 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:05,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1366032684, now seen corresponding path program 1 times [2024-11-08 17:23:05,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:05,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193249217] [2024-11-08 17:23:05,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:05,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:05,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:05,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193249217] [2024-11-08 17:23:05,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193249217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:05,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:05,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:23:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806764776] [2024-11-08 17:23:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:05,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:23:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:23:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:23:05,476 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:05,599 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2024-11-08 17:23:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:23:05,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-08 17:23:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:05,601 INFO L225 Difference]: With dead ends: 52 [2024-11-08 17:23:05,601 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 17:23:05,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:23:05,603 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:05,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 74 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:23:05,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 17:23:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2024-11-08 17:23:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 50 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:05,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2024-11-08 17:23:05,610 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 12 [2024-11-08 17:23:05,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:05,610 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2024-11-08 17:23:05,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:05,611 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2024-11-08 17:23:05,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 17:23:05,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:05,612 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:05,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:23:05,612 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:05,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:05,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1886093089, now seen corresponding path program 1 times [2024-11-08 17:23:05,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:05,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843949937] [2024-11-08 17:23:05,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:05,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:05,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:05,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843949937] [2024-11-08 17:23:05,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843949937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:05,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:05,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:23:05,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73460629] [2024-11-08 17:23:05,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:05,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:23:05,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:05,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:23:05,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:23:05,777 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:05,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:05,852 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2024-11-08 17:23:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:23:05,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-08 17:23:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:05,856 INFO L225 Difference]: With dead ends: 50 [2024-11-08 17:23:05,857 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 17:23:05,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:23:05,858 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 47 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:05,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 41 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:23:05,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 17:23:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-08 17:23:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2024-11-08 17:23:05,872 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 18 [2024-11-08 17:23:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:05,876 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2024-11-08 17:23:05,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2024-11-08 17:23:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 17:23:05,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:05,877 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:05,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:23:05,877 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:05,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:05,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1886093090, now seen corresponding path program 1 times [2024-11-08 17:23:05,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:05,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615240428] [2024-11-08 17:23:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:05,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:06,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:06,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615240428] [2024-11-08 17:23:06,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615240428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:06,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431319455] [2024-11-08 17:23:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:06,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:06,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:06,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:06,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:23:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:06,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 17:23:06,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:06,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:23:06,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-08 17:23:06,833 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:23:06,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:23:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:06,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:07,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2024-11-08 17:23:07,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:23:07,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2024-11-08 17:23:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:07,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431319455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:07,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:07,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2024-11-08 17:23:07,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364794979] [2024-11-08 17:23:07,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:07,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:23:07,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:07,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:23:07,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:23:07,424 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:08,073 INFO L93 Difference]: Finished difference Result 126 states and 161 transitions. [2024-11-08 17:23:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 17:23:08,074 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-08 17:23:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:08,077 INFO L225 Difference]: With dead ends: 126 [2024-11-08 17:23:08,077 INFO L226 Difference]: Without dead ends: 126 [2024-11-08 17:23:08,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:23:08,081 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 248 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:08,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 79 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:23:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-08 17:23:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 61. [2024-11-08 17:23:08,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 60 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2024-11-08 17:23:08,096 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 18 [2024-11-08 17:23:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:08,097 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2024-11-08 17:23:08,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2024-11-08 17:23:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 17:23:08,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:08,101 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:08,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:23:08,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:08,302 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:08,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:08,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1660656391, now seen corresponding path program 1 times [2024-11-08 17:23:08,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:08,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159544731] [2024-11-08 17:23:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:08,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:08,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:08,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159544731] [2024-11-08 17:23:08,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159544731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:08,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:08,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:23:08,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560043593] [2024-11-08 17:23:08,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:08,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:23:08,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:08,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:23:08,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:23:08,419 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:08,457 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2024-11-08 17:23:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:23:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 17:23:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:08,459 INFO L225 Difference]: With dead ends: 60 [2024-11-08 17:23:08,459 INFO L226 Difference]: Without dead ends: 60 [2024-11-08 17:23:08,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:23:08,463 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:08,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 44 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:23:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-08 17:23:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-08 17:23:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 59 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2024-11-08 17:23:08,474 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 19 [2024-11-08 17:23:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:08,474 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2024-11-08 17:23:08,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2024-11-08 17:23:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 17:23:08,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:08,479 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:08,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 17:23:08,480 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:08,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:08,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1660656390, now seen corresponding path program 1 times [2024-11-08 17:23:08,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:08,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046962673] [2024-11-08 17:23:08,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:08,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:08,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:08,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046962673] [2024-11-08 17:23:08,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046962673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:08,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873646637] [2024-11-08 17:23:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:08,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:08,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:08,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:08,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:23:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:08,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 17:23:08,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:08,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:23:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:08,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:09,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873646637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:09,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:09,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 17:23:09,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826289229] [2024-11-08 17:23:09,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:09,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:23:09,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:09,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:23:09,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:23:09,123 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:09,532 INFO L93 Difference]: Finished difference Result 152 states and 197 transitions. [2024-11-08 17:23:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:23:09,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 17:23:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:09,534 INFO L225 Difference]: With dead ends: 152 [2024-11-08 17:23:09,535 INFO L226 Difference]: Without dead ends: 152 [2024-11-08 17:23:09,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:23:09,536 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 156 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:09,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 140 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:23:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-08 17:23:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 113. [2024-11-08 17:23:09,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 106 states have (on average 1.490566037735849) internal successors, (158), 112 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 158 transitions. [2024-11-08 17:23:09,557 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 158 transitions. Word has length 19 [2024-11-08 17:23:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:09,557 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 158 transitions. [2024-11-08 17:23:09,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:09,557 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 158 transitions. [2024-11-08 17:23:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:23:09,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:09,559 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:09,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:23:09,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:09,763 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:09,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash 72530387, now seen corresponding path program 1 times [2024-11-08 17:23:09,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:09,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642767050] [2024-11-08 17:23:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:09,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:09,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642767050] [2024-11-08 17:23:09,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642767050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:23:09,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:23:09,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:23:09,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542036661] [2024-11-08 17:23:09,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:09,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:23:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:09,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:23:09,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:23:09,869 INFO L87 Difference]: Start difference. First operand 113 states and 158 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:09,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:09,931 INFO L93 Difference]: Finished difference Result 112 states and 155 transitions. [2024-11-08 17:23:09,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:23:09,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 17:23:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:09,932 INFO L225 Difference]: With dead ends: 112 [2024-11-08 17:23:09,932 INFO L226 Difference]: Without dead ends: 112 [2024-11-08 17:23:09,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:23:09,934 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:09,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 61 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:23:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-08 17:23:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-08 17:23:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 111 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 155 transitions. [2024-11-08 17:23:09,940 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 155 transitions. Word has length 20 [2024-11-08 17:23:09,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:09,940 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 155 transitions. [2024-11-08 17:23:09,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 155 transitions. [2024-11-08 17:23:09,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:23:09,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:09,942 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:09,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:23:09,942 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:09,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:09,943 INFO L85 PathProgramCache]: Analyzing trace with hash 72530388, now seen corresponding path program 1 times [2024-11-08 17:23:09,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:09,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036480188] [2024-11-08 17:23:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:09,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:10,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:10,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036480188] [2024-11-08 17:23:10,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036480188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:10,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218123182] [2024-11-08 17:23:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:10,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:10,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:10,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:10,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:23:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:10,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:23:10,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:10,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:10,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218123182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:10,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:10,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 17:23:10,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461525931] [2024-11-08 17:23:10,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:10,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:23:10,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:10,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:23:10,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:23:10,299 INFO L87 Difference]: Start difference. First operand 112 states and 155 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:10,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:10,465 INFO L93 Difference]: Finished difference Result 116 states and 149 transitions. [2024-11-08 17:23:10,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:23:10,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 17:23:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:10,467 INFO L225 Difference]: With dead ends: 116 [2024-11-08 17:23:10,468 INFO L226 Difference]: Without dead ends: 116 [2024-11-08 17:23:10,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:23:10,469 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 62 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:10,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 87 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:23:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-08 17:23:10,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2024-11-08 17:23:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.3584905660377358) internal successors, (144), 111 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:10,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 144 transitions. [2024-11-08 17:23:10,475 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 144 transitions. Word has length 20 [2024-11-08 17:23:10,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:10,476 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 144 transitions. [2024-11-08 17:23:10,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 144 transitions. [2024-11-08 17:23:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 17:23:10,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:10,477 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:10,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:10,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:10,680 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:10,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash 166046159, now seen corresponding path program 1 times [2024-11-08 17:23:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:10,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382408736] [2024-11-08 17:23:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:10,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:10,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382408736] [2024-11-08 17:23:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382408736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234637525] [2024-11-08 17:23:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:10,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:10,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:10,838 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:10,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:23:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:10,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:23:10,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:11,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:11,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234637525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:11,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:11,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 17:23:11,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615363139] [2024-11-08 17:23:11,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:11,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:23:11,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:23:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:23:11,120 INFO L87 Difference]: Start difference. First operand 112 states and 144 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:11,286 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2024-11-08 17:23:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:23:11,287 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-08 17:23:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:11,288 INFO L225 Difference]: With dead ends: 110 [2024-11-08 17:23:11,288 INFO L226 Difference]: Without dead ends: 110 [2024-11-08 17:23:11,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:23:11,289 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 75 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:11,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 104 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:23:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-08 17:23:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2024-11-08 17:23:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 108 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 138 transitions. [2024-11-08 17:23:11,294 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 138 transitions. Word has length 23 [2024-11-08 17:23:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:11,298 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 138 transitions. [2024-11-08 17:23:11,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 138 transitions. [2024-11-08 17:23:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 17:23:11,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:11,299 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:11,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:11,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:23:11,501 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:11,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:11,501 INFO L85 PathProgramCache]: Analyzing trace with hash 669838657, now seen corresponding path program 1 times [2024-11-08 17:23:11,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:11,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693634243] [2024-11-08 17:23:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:11,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:11,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:11,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693634243] [2024-11-08 17:23:11,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693634243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:11,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025625778] [2024-11-08 17:23:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:11,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:11,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:11,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:11,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:23:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:11,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 17:23:11,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:11,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:23:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:11,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:12,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025625778] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:12,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:23:12,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 10 [2024-11-08 17:23:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383917910] [2024-11-08 17:23:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:23:12,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:23:12,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:23:12,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:23:12,135 INFO L87 Difference]: Start difference. First operand 109 states and 138 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:12,238 INFO L93 Difference]: Finished difference Result 113 states and 143 transitions. [2024-11-08 17:23:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:23:12,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-08 17:23:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:12,240 INFO L225 Difference]: With dead ends: 113 [2024-11-08 17:23:12,240 INFO L226 Difference]: Without dead ends: 113 [2024-11-08 17:23:12,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:23:12,243 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:12,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:23:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-08 17:23:12,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2024-11-08 17:23:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 106 states have (on average 1.330188679245283) internal successors, (141), 111 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:12,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2024-11-08 17:23:12,250 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 25 [2024-11-08 17:23:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:12,250 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2024-11-08 17:23:12,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2024-11-08 17:23:12,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 17:23:12,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:12,252 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:12,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:12,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 17:23:12,453 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:12,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1067945519, now seen corresponding path program 1 times [2024-11-08 17:23:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:12,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289700403] [2024-11-08 17:23:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:12,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:23:12,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289700403] [2024-11-08 17:23:12,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289700403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902602207] [2024-11-08 17:23:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:12,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:12,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:12,656 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:12,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:23:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:12,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:23:12,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:23:12,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:23:12,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902602207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:12,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:12,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 17:23:12,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990290764] [2024-11-08 17:23:12,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:12,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 17:23:12,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:12,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 17:23:12,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-08 17:23:12,978 INFO L87 Difference]: Start difference. First operand 112 states and 141 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:13,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:13,160 INFO L93 Difference]: Finished difference Result 109 states and 129 transitions. [2024-11-08 17:23:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:23:13,161 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-08 17:23:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:13,162 INFO L225 Difference]: With dead ends: 109 [2024-11-08 17:23:13,162 INFO L226 Difference]: Without dead ends: 109 [2024-11-08 17:23:13,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-08 17:23:13,163 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:13,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 89 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:23:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-08 17:23:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2024-11-08 17:23:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.268041237113402) internal successors, (123), 102 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:13,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2024-11-08 17:23:13,167 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 28 [2024-11-08 17:23:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:13,170 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2024-11-08 17:23:13,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:13,170 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2024-11-08 17:23:13,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 17:23:13,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:13,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:13,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:13,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 17:23:13,372 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:13,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:13,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1631239801, now seen corresponding path program 1 times [2024-11-08 17:23:13,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:13,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871901147] [2024-11-08 17:23:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:23:13,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:13,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871901147] [2024-11-08 17:23:13,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871901147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:13,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046830965] [2024-11-08 17:23:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:13,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:13,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:13,563 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:13,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:23:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:13,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:23:13,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:23:13,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:23:13,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046830965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:13,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:13,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-08 17:23:13,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372843292] [2024-11-08 17:23:13,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:13,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:23:13,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:23:13,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:23:13,896 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:14,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:14,114 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2024-11-08 17:23:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:23:14,115 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-08 17:23:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:14,116 INFO L225 Difference]: With dead ends: 102 [2024-11-08 17:23:14,117 INFO L226 Difference]: Without dead ends: 102 [2024-11-08 17:23:14,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-08 17:23:14,118 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:14,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 120 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:23:14,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-08 17:23:14,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-08 17:23:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.2526315789473683) internal successors, (119), 100 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2024-11-08 17:23:14,124 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 29 [2024-11-08 17:23:14,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:14,125 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2024-11-08 17:23:14,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2024-11-08 17:23:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-08 17:23:14,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:14,129 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:14,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:14,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 17:23:14,334 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:14,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:14,335 INFO L85 PathProgramCache]: Analyzing trace with hash -967472523, now seen corresponding path program 1 times [2024-11-08 17:23:14,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:14,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782892640] [2024-11-08 17:23:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:14,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:14,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782892640] [2024-11-08 17:23:14,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782892640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:14,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280819657] [2024-11-08 17:23:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:14,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:14,821 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:14,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:23:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:14,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 17:23:14,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:14,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:23:14,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:23:15,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:23:15,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:23:15,053 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:23:15,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:23:15,216 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 17:23:15,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-08 17:23:15,236 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:23:15,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:23:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:15,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:15,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:23:15,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:23:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:16,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280819657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:16,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:16,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 16 [2024-11-08 17:23:16,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068564750] [2024-11-08 17:23:16,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:16,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 17:23:16,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 17:23:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:23:16,096 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 17 states, 16 states have (on average 5.875) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:16,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:16,764 INFO L93 Difference]: Finished difference Result 128 states and 144 transitions. [2024-11-08 17:23:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:23:16,765 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.875) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-08 17:23:16,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:16,766 INFO L225 Difference]: With dead ends: 128 [2024-11-08 17:23:16,766 INFO L226 Difference]: Without dead ends: 128 [2024-11-08 17:23:16,766 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:23:16,767 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 149 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:16,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 139 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:23:16,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-08 17:23:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2024-11-08 17:23:16,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 116 states have (on average 1.2413793103448276) internal successors, (144), 121 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2024-11-08 17:23:16,774 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 32 [2024-11-08 17:23:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:16,775 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2024-11-08 17:23:16,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.875) internal successors, (94), 17 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2024-11-08 17:23:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 17:23:16,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:16,777 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:16,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:23:16,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:23:16,982 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:16,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:16,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1033938748, now seen corresponding path program 1 times [2024-11-08 17:23:16,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563309368] [2024-11-08 17:23:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:16,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:23:17,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:17,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563309368] [2024-11-08 17:23:17,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563309368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:17,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138070558] [2024-11-08 17:23:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:17,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:17,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:17,448 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:17,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:23:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:17,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:23:17,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:17,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:17,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138070558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:17,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:17,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 19 [2024-11-08 17:23:17,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638842159] [2024-11-08 17:23:17,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:17,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 17:23:17,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:17,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 17:23:17,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-08 17:23:17,857 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand has 19 states, 19 states have (on average 5.684210526315789) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:19,050 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2024-11-08 17:23:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-08 17:23:19,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.684210526315789) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-08 17:23:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:19,052 INFO L225 Difference]: With dead ends: 171 [2024-11-08 17:23:19,052 INFO L226 Difference]: Without dead ends: 171 [2024-11-08 17:23:19,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=473, Invalid=1879, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 17:23:19,054 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 360 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:19,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 172 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:23:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-08 17:23:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 144. [2024-11-08 17:23:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.20863309352518) internal successors, (168), 143 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:19,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2024-11-08 17:23:19,059 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 38 [2024-11-08 17:23:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:19,060 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2024-11-08 17:23:19,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.684210526315789) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2024-11-08 17:23:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 17:23:19,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:19,061 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:19,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:23:19,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 17:23:19,262 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:19,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1962393714, now seen corresponding path program 1 times [2024-11-08 17:23:19,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:19,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845542016] [2024-11-08 17:23:19,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:19,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 17:23:19,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845542016] [2024-11-08 17:23:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845542016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:19,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334241553] [2024-11-08 17:23:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:19,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:19,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:19,824 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:19,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:23:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:19,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 17:23:19,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:20,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:23:20,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-08 17:23:20,259 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:23:20,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:23:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:20,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:20,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2024-11-08 17:23:20,642 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:23:20,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2024-11-08 17:23:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:20,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334241553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:20,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:20,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-11-08 17:23:20,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841214738] [2024-11-08 17:23:20,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:20,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 17:23:20,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:20,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 17:23:20,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-08 17:23:20,934 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 18 states, 17 states have (on average 7.470588235294118) internal successors, (127), 18 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:21,471 INFO L93 Difference]: Finished difference Result 219 states and 264 transitions. [2024-11-08 17:23:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:23:21,471 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 7.470588235294118) internal successors, (127), 18 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-08 17:23:21,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:21,473 INFO L225 Difference]: With dead ends: 219 [2024-11-08 17:23:21,473 INFO L226 Difference]: Without dead ends: 219 [2024-11-08 17:23:21,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2024-11-08 17:23:21,474 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 146 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:21,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 179 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:23:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-08 17:23:21,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 162. [2024-11-08 17:23:21,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.2229299363057324) internal successors, (192), 161 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:21,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2024-11-08 17:23:21,484 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 43 [2024-11-08 17:23:21,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:21,485 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2024-11-08 17:23:21,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 7.470588235294118) internal successors, (127), 18 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2024-11-08 17:23:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 17:23:21,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:21,486 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:21,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:21,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 17:23:21,686 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:21,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:21,687 INFO L85 PathProgramCache]: Analyzing trace with hash -704663026, now seen corresponding path program 1 times [2024-11-08 17:23:21,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:21,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6531567] [2024-11-08 17:23:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:22,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:22,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6531567] [2024-11-08 17:23:22,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6531567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:22,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175317930] [2024-11-08 17:23:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:22,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:22,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:22,030 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:22,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:23:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:22,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 17:23:22,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:22,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:23:22,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:23:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:23:22,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:22,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 17:23:22,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 17:23:22,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-08 17:23:22,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-08 17:23:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 17:23:22,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175317930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:22,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:22,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 15] total 22 [2024-11-08 17:23:22,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157378612] [2024-11-08 17:23:22,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:22,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 17:23:22,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:22,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 17:23:22,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:23:22,748 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:24,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:24,208 INFO L93 Difference]: Finished difference Result 205 states and 233 transitions. [2024-11-08 17:23:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 17:23:24,208 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-08 17:23:24,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:24,209 INFO L225 Difference]: With dead ends: 205 [2024-11-08 17:23:24,209 INFO L226 Difference]: Without dead ends: 205 [2024-11-08 17:23:24,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=307, Invalid=2773, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 17:23:24,211 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 212 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:24,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 249 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 17:23:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-08 17:23:24,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 183. [2024-11-08 17:23:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.2078651685393258) internal successors, (215), 182 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 215 transitions. [2024-11-08 17:23:24,218 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 215 transitions. Word has length 44 [2024-11-08 17:23:24,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:24,218 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 215 transitions. [2024-11-08 17:23:24,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 215 transitions. [2024-11-08 17:23:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 17:23:24,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:24,220 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:24,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:23:24,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:24,424 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:24,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:24,424 INFO L85 PathProgramCache]: Analyzing trace with hash 652284005, now seen corresponding path program 1 times [2024-11-08 17:23:24,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:24,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096154198] [2024-11-08 17:23:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:24,829 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:24,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:24,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096154198] [2024-11-08 17:23:24,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096154198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:24,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620214154] [2024-11-08 17:23:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:24,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:24,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:24,837 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:24,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:23:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:25,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:23:25,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:25,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:25,293 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 17:23:25,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620214154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:25,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:25,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-08 17:23:25,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464774701] [2024-11-08 17:23:25,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:25,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:23:25,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:25,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:23:25,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:23:25,296 INFO L87 Difference]: Start difference. First operand 183 states and 215 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:25,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:25,593 INFO L93 Difference]: Finished difference Result 192 states and 222 transitions. [2024-11-08 17:23:25,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:23:25,593 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-08 17:23:25,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:25,594 INFO L225 Difference]: With dead ends: 192 [2024-11-08 17:23:25,594 INFO L226 Difference]: Without dead ends: 192 [2024-11-08 17:23:25,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:23:25,595 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 164 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:25,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 142 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:23:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-08 17:23:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2024-11-08 17:23:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.1952662721893492) internal successors, (202), 173 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 202 transitions. [2024-11-08 17:23:25,604 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 202 transitions. Word has length 48 [2024-11-08 17:23:25,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:25,604 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 202 transitions. [2024-11-08 17:23:25,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 202 transitions. [2024-11-08 17:23:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 17:23:25,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:25,606 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-08 17:23:25,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 17:23:25,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:25,811 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:25,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:25,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1214477750, now seen corresponding path program 2 times [2024-11-08 17:23:25,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:25,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192795885] [2024-11-08 17:23:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:25,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:23:26,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:26,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192795885] [2024-11-08 17:23:26,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192795885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:26,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358534332] [2024-11-08 17:23:26,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:23:26,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:26,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:26,051 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:26,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:23:26,235 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:23:26,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:26,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:23:26,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:23:26,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 17:23:26,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358534332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:26,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:26,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-08 17:23:26,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243384156] [2024-11-08 17:23:26,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:26,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 17:23:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 17:23:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:23:26,493 INFO L87 Difference]: Start difference. First operand 174 states and 202 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:26,731 INFO L93 Difference]: Finished difference Result 171 states and 197 transitions. [2024-11-08 17:23:26,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:23:26,732 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 17:23:26,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:26,733 INFO L225 Difference]: With dead ends: 171 [2024-11-08 17:23:26,733 INFO L226 Difference]: Without dead ends: 171 [2024-11-08 17:23:26,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:23:26,734 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 49 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:26,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 140 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:23:26,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-08 17:23:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2024-11-08 17:23:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.175) internal successors, (188), 164 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2024-11-08 17:23:26,741 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 49 [2024-11-08 17:23:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:26,741 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2024-11-08 17:23:26,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2024-11-08 17:23:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 17:23:26,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:26,743 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-08 17:23:26,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:26,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 17:23:26,944 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:26,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:26,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1350065295, now seen corresponding path program 3 times [2024-11-08 17:23:26,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:26,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897706065] [2024-11-08 17:23:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:26,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 17:23:27,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:27,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897706065] [2024-11-08 17:23:27,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897706065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:27,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283560245] [2024-11-08 17:23:27,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:23:27,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:27,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:27,322 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:27,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:23:27,501 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:23:27,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:27,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 17:23:27,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 17:23:27,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:28,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-08 17:23:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 17:23:28,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283560245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:28,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:28,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2024-11-08 17:23:28,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518883290] [2024-11-08 17:23:28,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:28,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 17:23:28,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:28,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 17:23:28,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-08 17:23:28,237 INFO L87 Difference]: Start difference. First operand 165 states and 188 transitions. Second operand has 21 states, 20 states have (on average 3.8) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:28,698 INFO L93 Difference]: Finished difference Result 181 states and 200 transitions. [2024-11-08 17:23:28,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 17:23:28,700 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.8) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 17:23:28,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:28,701 INFO L225 Difference]: With dead ends: 181 [2024-11-08 17:23:28,701 INFO L226 Difference]: Without dead ends: 181 [2024-11-08 17:23:28,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2024-11-08 17:23:28,702 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 39 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:28,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 131 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:23:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-08 17:23:28,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 157. [2024-11-08 17:23:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 154 states have (on average 1.1233766233766234) internal successors, (173), 156 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2024-11-08 17:23:28,706 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 54 [2024-11-08 17:23:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:28,707 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2024-11-08 17:23:28,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.8) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2024-11-08 17:23:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-08 17:23:28,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:28,708 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2024-11-08 17:23:28,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 17:23:28,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-08 17:23:28,913 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:28,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1229250929, now seen corresponding path program 2 times [2024-11-08 17:23:28,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:28,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289302711] [2024-11-08 17:23:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:28,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 17:23:29,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:29,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289302711] [2024-11-08 17:23:29,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289302711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:29,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396245493] [2024-11-08 17:23:29,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:23:29,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:29,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:29,214 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:29,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:23:29,390 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:23:29,391 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:29,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:23:29,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 17:23:29,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 17:23:29,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396245493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:29,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:29,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-08 17:23:29,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387826364] [2024-11-08 17:23:29,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:29,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:23:29,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:29,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:23:29,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:23:29,629 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:29,836 INFO L93 Difference]: Finished difference Result 182 states and 197 transitions. [2024-11-08 17:23:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:23:29,836 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-08 17:23:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:29,837 INFO L225 Difference]: With dead ends: 182 [2024-11-08 17:23:29,837 INFO L226 Difference]: Without dead ends: 182 [2024-11-08 17:23:29,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:23:29,838 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:29,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 207 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:23:29,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-08 17:23:29,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 166. [2024-11-08 17:23:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 163 states have (on average 1.1104294478527608) internal successors, (181), 165 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:29,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2024-11-08 17:23:29,842 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 73 [2024-11-08 17:23:29,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:29,843 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2024-11-08 17:23:29,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:29,843 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2024-11-08 17:23:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 17:23:29,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:29,844 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-08 17:23:29,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:30,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-08 17:23:30,045 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:30,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:30,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1812825557, now seen corresponding path program 2 times [2024-11-08 17:23:30,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:30,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466301389] [2024-11-08 17:23:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:30,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 34 proven. 98 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-08 17:23:30,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:30,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466301389] [2024-11-08 17:23:30,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466301389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123444381] [2024-11-08 17:23:30,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:23:30,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:30,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:30,648 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:30,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:23:30,848 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:23:30,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:30,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:23:30,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:31,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:23:31,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-08 17:23:31,148 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:23:31,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:23:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 61 proven. 67 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:23:31,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:31,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2024-11-08 17:23:31,556 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:23:31,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2024-11-08 17:23:31,879 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 61 proven. 67 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:23:31,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123444381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:31,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:31,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2024-11-08 17:23:31,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778646511] [2024-11-08 17:23:31,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:31,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:23:31,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:31,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:23:31,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2024-11-08 17:23:31,897 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand has 24 states, 23 states have (on average 8.91304347826087) internal successors, (205), 24 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:32,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:32,505 INFO L93 Difference]: Finished difference Result 229 states and 253 transitions. [2024-11-08 17:23:32,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 17:23:32,506 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 8.91304347826087) internal successors, (205), 24 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-08 17:23:32,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:32,507 INFO L225 Difference]: With dead ends: 229 [2024-11-08 17:23:32,507 INFO L226 Difference]: Without dead ends: 229 [2024-11-08 17:23:32,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=920, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 17:23:32,508 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 162 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:32,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 362 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:23:32,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-08 17:23:32,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 181. [2024-11-08 17:23:32,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 178 states have (on average 1.1179775280898876) internal successors, (199), 180 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 199 transitions. [2024-11-08 17:23:32,513 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 199 transitions. Word has length 77 [2024-11-08 17:23:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:32,513 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 199 transitions. [2024-11-08 17:23:32,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 8.91304347826087) internal successors, (205), 24 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 199 transitions. [2024-11-08 17:23:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-08 17:23:32,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:32,514 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2024-11-08 17:23:32,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:32,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 17:23:32,719 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:32,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1913314044, now seen corresponding path program 3 times [2024-11-08 17:23:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282924994] [2024-11-08 17:23:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:32,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 19 proven. 140 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 17:23:32,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:32,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282924994] [2024-11-08 17:23:32,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282924994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:32,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67936585] [2024-11-08 17:23:32,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:23:32,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:32,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:32,962 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:32,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 17:23:33,132 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:23:33,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:33,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 17:23:33,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:33,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:23:33,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-08 17:23:33,199 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:23:33,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:23:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-08 17:23:33,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 74 proven. 13 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-08 17:23:33,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67936585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:33,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:33,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2024-11-08 17:23:33,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940829950] [2024-11-08 17:23:33,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:33,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 17:23:33,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 17:23:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-08 17:23:33,694 INFO L87 Difference]: Start difference. First operand 181 states and 199 transitions. Second operand has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:34,728 INFO L93 Difference]: Finished difference Result 185 states and 200 transitions. [2024-11-08 17:23:34,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-08 17:23:34,729 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-08 17:23:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:34,730 INFO L225 Difference]: With dead ends: 185 [2024-11-08 17:23:34,730 INFO L226 Difference]: Without dead ends: 185 [2024-11-08 17:23:34,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=589, Invalid=2273, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 17:23:34,731 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 238 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:34,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 123 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:23:34,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-08 17:23:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 164. [2024-11-08 17:23:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 1.0925925925925926) internal successors, (177), 163 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 177 transitions. [2024-11-08 17:23:34,736 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 177 transitions. Word has length 82 [2024-11-08 17:23:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:34,736 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 177 transitions. [2024-11-08 17:23:34,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:34,736 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 177 transitions. [2024-11-08 17:23:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-08 17:23:34,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:34,738 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2024-11-08 17:23:34,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-08 17:23:34,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 17:23:34,942 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:34,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:34,942 INFO L85 PathProgramCache]: Analyzing trace with hash 929526119, now seen corresponding path program 2 times [2024-11-08 17:23:34,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:34,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176763897] [2024-11-08 17:23:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:34,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 230 proven. 39 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-08 17:23:35,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:35,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176763897] [2024-11-08 17:23:35,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176763897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:35,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115484040] [2024-11-08 17:23:35,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:23:35,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:35,297 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:35,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 17:23:35,533 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:23:35,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:35,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 17:23:35,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 255 proven. 49 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-08 17:23:35,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 255 proven. 49 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-08 17:23:35,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115484040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:35,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:35,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-08 17:23:35,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026506183] [2024-11-08 17:23:35,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:35,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 17:23:35,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:35,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 17:23:35,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-08 17:23:35,850 INFO L87 Difference]: Start difference. First operand 164 states and 177 transitions. Second operand has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:36,222 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2024-11-08 17:23:36,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 17:23:36,222 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-11-08 17:23:36,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:36,223 INFO L225 Difference]: With dead ends: 182 [2024-11-08 17:23:36,223 INFO L226 Difference]: Without dead ends: 182 [2024-11-08 17:23:36,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 226 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:23:36,224 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 70 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:36,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 152 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 17:23:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-08 17:23:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2024-11-08 17:23:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 172 states have (on average 1.0813953488372092) internal successors, (186), 173 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2024-11-08 17:23:36,228 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 119 [2024-11-08 17:23:36,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:36,229 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2024-11-08 17:23:36,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.933333333333334) internal successors, (134), 15 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2024-11-08 17:23:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-08 17:23:36,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:36,230 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2024-11-08 17:23:36,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 17:23:36,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 17:23:36,431 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:36,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1697531207, now seen corresponding path program 3 times [2024-11-08 17:23:36,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:36,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885944084] [2024-11-08 17:23:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 325 proven. 63 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-08 17:23:36,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:36,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885944084] [2024-11-08 17:23:36,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885944084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:36,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149745069] [2024-11-08 17:23:36,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:23:36,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:36,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:36,897 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:36,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 17:23:37,163 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 17:23:37,163 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:37,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 17:23:37,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 20 proven. 319 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-08 17:23:37,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 29 proven. 310 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-08 17:23:37,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149745069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:37,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:37,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 25 [2024-11-08 17:23:37,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789997821] [2024-11-08 17:23:37,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:37,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:23:37,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:37,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:23:37,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:23:37,799 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:38,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:38,527 INFO L93 Difference]: Finished difference Result 199 states and 211 transitions. [2024-11-08 17:23:38,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 17:23:38,528 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2024-11-08 17:23:38,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:38,529 INFO L225 Difference]: With dead ends: 199 [2024-11-08 17:23:38,529 INFO L226 Difference]: Without dead ends: 199 [2024-11-08 17:23:38,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 241 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2024-11-08 17:23:38,530 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 113 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:38,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 146 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:23:38,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-08 17:23:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 186. [2024-11-08 17:23:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 184 states have (on average 1.076086956521739) internal successors, (198), 185 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:38,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 198 transitions. [2024-11-08 17:23:38,534 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 198 transitions. Word has length 129 [2024-11-08 17:23:38,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:38,535 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 198 transitions. [2024-11-08 17:23:38,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:38,535 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 198 transitions. [2024-11-08 17:23:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-08 17:23:38,536 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:38,537 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2024-11-08 17:23:38,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 17:23:38,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:38,737 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:38,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:38,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1481075913, now seen corresponding path program 4 times [2024-11-08 17:23:38,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:38,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398613375] [2024-11-08 17:23:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:38,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 313 proven. 144 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-08 17:23:39,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:39,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398613375] [2024-11-08 17:23:39,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398613375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:39,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388021250] [2024-11-08 17:23:39,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:23:39,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:39,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:39,173 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:39,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 17:23:39,686 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:23:39,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:39,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 17:23:39,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 327 proven. 130 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-08 17:23:39,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 327 proven. 130 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-08 17:23:40,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388021250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:40,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:40,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-11-08 17:23:40,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311862116] [2024-11-08 17:23:40,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:40,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 17:23:40,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:40,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 17:23:40,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:23:40,186 INFO L87 Difference]: Start difference. First operand 186 states and 198 transitions. Second operand has 20 states, 20 states have (on average 7.4) internal successors, (148), 20 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:40,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:40,822 INFO L93 Difference]: Finished difference Result 204 states and 216 transitions. [2024-11-08 17:23:40,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 17:23:40,823 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.4) internal successors, (148), 20 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2024-11-08 17:23:40,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:40,824 INFO L225 Difference]: With dead ends: 204 [2024-11-08 17:23:40,824 INFO L226 Difference]: Without dead ends: 204 [2024-11-08 17:23:40,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 261 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=632, Unknown=0, NotChecked=0, Total=870 [2024-11-08 17:23:40,826 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 55 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:40,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 368 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:23:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-08 17:23:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 196. [2024-11-08 17:23:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 194 states have (on average 1.0721649484536082) internal successors, (208), 195 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2024-11-08 17:23:40,832 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 137 [2024-11-08 17:23:40,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:40,833 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2024-11-08 17:23:40,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.4) internal successors, (148), 20 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:40,833 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2024-11-08 17:23:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-08 17:23:40,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:40,835 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2024-11-08 17:23:40,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:41,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:41,036 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:41,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1294578862, now seen corresponding path program 5 times [2024-11-08 17:23:41,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:41,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046423292] [2024-11-08 17:23:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:41,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 353 proven. 135 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-08 17:23:41,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:41,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046423292] [2024-11-08 17:23:41,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046423292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:41,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600144440] [2024-11-08 17:23:41,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:23:41,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:41,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:41,754 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:41,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 17:23:42,694 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 17:23:42,695 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:42,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 17:23:42,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 282 proven. 31 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-08 17:23:42,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 282 proven. 31 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-08 17:23:43,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600144440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:43,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:43,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-11-08 17:23:43,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659255402] [2024-11-08 17:23:43,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:43,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:23:43,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:43,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:23:43,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:23:43,216 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand has 25 states, 25 states have (on average 6.88) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:44,349 INFO L93 Difference]: Finished difference Result 214 states and 226 transitions. [2024-11-08 17:23:44,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 17:23:44,350 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.88) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2024-11-08 17:23:44,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:44,351 INFO L225 Difference]: With dead ends: 214 [2024-11-08 17:23:44,351 INFO L226 Difference]: Without dead ends: 214 [2024-11-08 17:23:44,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 267 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=527, Invalid=1729, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 17:23:44,352 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 128 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:44,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 211 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:23:44,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-08 17:23:44,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 204. [2024-11-08 17:23:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 202 states have (on average 1.0693069306930694) internal successors, (216), 203 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 216 transitions. [2024-11-08 17:23:44,360 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 216 transitions. Word has length 142 [2024-11-08 17:23:44,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:44,361 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 216 transitions. [2024-11-08 17:23:44,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.88) internal successors, (172), 25 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:44,362 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 216 transitions. [2024-11-08 17:23:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-08 17:23:44,364 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:44,364 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2024-11-08 17:23:44,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:44,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:44,565 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:44,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash -887173130, now seen corresponding path program 6 times [2024-11-08 17:23:44,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:44,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552475503] [2024-11-08 17:23:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:44,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 523 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-08 17:23:47,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:47,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552475503] [2024-11-08 17:23:47,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552475503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:47,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33286666] [2024-11-08 17:23:47,094 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:23:47,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:47,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:47,096 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:47,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 17:23:47,513 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 17:23:47,513 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:47,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-08 17:23:47,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:47,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 17:23:47,612 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 17:23:47,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-08 17:23:47,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:23:47,979 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 17:23:47,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-08 17:23:48,008 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-08 17:23:48,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-08 17:23:48,268 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 17:23:48,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-08 17:23:48,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:23:48,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:23:48,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:23:48,794 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-08 17:23:48,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-08 17:23:49,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:23:49,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:23:49,267 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:23:49,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:23:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 501 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-08 17:23:49,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:50,364 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:23:50,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:23:51,189 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:23:51,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-08 17:23:52,383 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:23:52,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-08 17:23:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 501 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-08 17:23:52,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33286666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:52,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:52,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 54 [2024-11-08 17:23:52,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680589104] [2024-11-08 17:23:52,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:52,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-08 17:23:52,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-08 17:23:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=2445, Unknown=0, NotChecked=0, Total=2970 [2024-11-08 17:23:52,852 INFO L87 Difference]: Start difference. First operand 204 states and 216 transitions. Second operand has 55 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 55 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:55,565 INFO L93 Difference]: Finished difference Result 440 states and 470 transitions. [2024-11-08 17:23:55,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 17:23:55,566 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 55 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-08 17:23:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:55,568 INFO L225 Difference]: With dead ends: 440 [2024-11-08 17:23:55,568 INFO L226 Difference]: Without dead ends: 440 [2024-11-08 17:23:55,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1329, Invalid=5151, Unknown=0, NotChecked=0, Total=6480 [2024-11-08 17:23:55,570 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 905 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:55,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 990 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:23:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-08 17:23:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 437. [2024-11-08 17:23:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 435 states have (on average 1.0735632183908046) internal successors, (467), 436 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 467 transitions. [2024-11-08 17:23:55,579 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 467 transitions. Word has length 146 [2024-11-08 17:23:55,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:55,579 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 467 transitions. [2024-11-08 17:23:55,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 55 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 467 transitions. [2024-11-08 17:23:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-08 17:23:55,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:55,582 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:55,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:55,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:55,787 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:55,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:55,787 INFO L85 PathProgramCache]: Analyzing trace with hash 736383547, now seen corresponding path program 1 times [2024-11-08 17:23:55,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:55,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735043699] [2024-11-08 17:23:55,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:55,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 0 proven. 986 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-08 17:23:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735043699] [2024-11-08 17:23:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735043699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995975341] [2024-11-08 17:23:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:56,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:56,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:56,214 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:56,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 17:23:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:56,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 17:23:56,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:23:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 751 proven. 269 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-08 17:23:56,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:23:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1158 backedges. 751 proven. 269 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-08 17:23:57,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995975341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:23:57,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:23:57,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 25 [2024-11-08 17:23:57,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391968085] [2024-11-08 17:23:57,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:23:57,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-08 17:23:57,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:23:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-08 17:23:57,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-11-08 17:23:57,242 INFO L87 Difference]: Start difference. First operand 437 states and 467 transitions. Second operand has 25 states, 25 states have (on average 10.84) internal successors, (271), 25 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:58,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:23:58,186 INFO L93 Difference]: Finished difference Result 491 states and 520 transitions. [2024-11-08 17:23:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-08 17:23:58,186 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.84) internal successors, (271), 25 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2024-11-08 17:23:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:23:58,187 INFO L225 Difference]: With dead ends: 491 [2024-11-08 17:23:58,187 INFO L226 Difference]: Without dead ends: 491 [2024-11-08 17:23:58,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 382 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=700, Invalid=2722, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 17:23:58,189 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 236 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:23:58,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 663 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:23:58,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-08 17:23:58,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 467. [2024-11-08 17:23:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.0666666666666667) internal successors, (496), 466 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 496 transitions. [2024-11-08 17:23:58,197 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 496 transitions. Word has length 202 [2024-11-08 17:23:58,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:23:58,198 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 496 transitions. [2024-11-08 17:23:58,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.84) internal successors, (271), 25 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:23:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 496 transitions. [2024-11-08 17:23:58,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-08 17:23:58,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:23:58,200 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 18, 18, 18, 18, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:23:58,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 17:23:58,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:58,405 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:23:58,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:23:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1963798283, now seen corresponding path program 2 times [2024-11-08 17:23:58,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:23:58,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088221875] [2024-11-08 17:23:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:23:58,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:23:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:23:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2066 backedges. 1559 proven. 252 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-08 17:23:59,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:23:59,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088221875] [2024-11-08 17:23:59,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088221875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:23:59,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076951850] [2024-11-08 17:23:59,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:23:59,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:23:59,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:23:59,427 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:23:59,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 17:23:59,920 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:23:59,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:23:59,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:23:59,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2066 backedges. 1293 proven. 518 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-08 17:24:00,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:24:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2066 backedges. 1293 proven. 518 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2024-11-08 17:24:00,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076951850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:24:00,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:24:00,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2024-11-08 17:24:00,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007989621] [2024-11-08 17:24:00,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:24:00,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:24:00,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:00,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:24:00,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:24:00,873 INFO L87 Difference]: Start difference. First operand 467 states and 496 transitions. Second operand has 26 states, 26 states have (on average 7.769230769230769) internal successors, (202), 26 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:01,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:24:01,322 INFO L93 Difference]: Finished difference Result 515 states and 544 transitions. [2024-11-08 17:24:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 17:24:01,323 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.769230769230769) internal successors, (202), 26 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2024-11-08 17:24:01,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:24:01,325 INFO L225 Difference]: With dead ends: 515 [2024-11-08 17:24:01,325 INFO L226 Difference]: Without dead ends: 515 [2024-11-08 17:24:01,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 500 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 17:24:01,326 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 43 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:24:01,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 355 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 17:24:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-08 17:24:01,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 491. [2024-11-08 17:24:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 489 states have (on average 1.0633946830265848) internal successors, (520), 490 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 520 transitions. [2024-11-08 17:24:01,343 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 520 transitions. Word has length 259 [2024-11-08 17:24:01,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:24:01,343 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 520 transitions. [2024-11-08 17:24:01,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.769230769230769) internal successors, (202), 26 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 520 transitions. [2024-11-08 17:24:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-08 17:24:01,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:24:01,347 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:01,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:01,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:01,547 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:24:01,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1024657413, now seen corresponding path program 3 times [2024-11-08 17:24:01,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:01,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678939149] [2024-11-08 17:24:01,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:01,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:02,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 1538 proven. 425 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-08 17:24:02,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:02,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678939149] [2024-11-08 17:24:02,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678939149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:02,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616502139] [2024-11-08 17:24:02,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:24:02,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:02,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:02,781 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:02,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 17:24:03,374 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 17:24:03,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:24:03,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 17:24:03,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:24:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 826 proven. 55 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2024-11-08 17:24:03,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:24:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 826 proven. 55 refuted. 0 times theorem prover too weak. 1347 trivial. 0 not checked. [2024-11-08 17:24:04,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616502139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:24:04,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:24:04,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 10] total 32 [2024-11-08 17:24:04,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168383569] [2024-11-08 17:24:04,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:24:04,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 17:24:04,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:24:04,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 17:24:04,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2024-11-08 17:24:04,040 INFO L87 Difference]: Start difference. First operand 491 states and 520 transitions. Second operand has 32 states, 32 states have (on average 8.09375) internal successors, (259), 32 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:24:07,225 INFO L93 Difference]: Finished difference Result 1193 states and 1281 transitions. [2024-11-08 17:24:07,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-08 17:24:07,226 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.09375) internal successors, (259), 32 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2024-11-08 17:24:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:24:07,230 INFO L225 Difference]: With dead ends: 1193 [2024-11-08 17:24:07,230 INFO L226 Difference]: Without dead ends: 1193 [2024-11-08 17:24:07,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4332 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2881, Invalid=12125, Unknown=0, NotChecked=0, Total=15006 [2024-11-08 17:24:07,236 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 543 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:24:07,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 386 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 17:24:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2024-11-08 17:24:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1108. [2024-11-08 17:24:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1106 states have (on average 1.0795660036166366) internal successors, (1194), 1107 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1194 transitions. [2024-11-08 17:24:07,262 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1194 transitions. Word has length 267 [2024-11-08 17:24:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:24:07,262 INFO L471 AbstractCegarLoop]: Abstraction has 1108 states and 1194 transitions. [2024-11-08 17:24:07,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.09375) internal successors, (259), 32 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:24:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1194 transitions. [2024-11-08 17:24:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-08 17:24:07,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:24:07,266 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 21, 21, 21, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:24:07,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-08 17:24:07,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:07,467 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:24:07,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:24:07,467 INFO L85 PathProgramCache]: Analyzing trace with hash -773019467, now seen corresponding path program 4 times [2024-11-08 17:24:07,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:24:07,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482245589] [2024-11-08 17:24:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:24:07,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:24:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:24:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3610 backedges. 0 proven. 2919 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2024-11-08 17:24:08,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:24:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482245589] [2024-11-08 17:24:08,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482245589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:24:08,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591657951] [2024-11-08 17:24:08,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:24:08,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:24:08,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:24:08,176 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:24:08,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 17:27:16,264 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 17:27:16,265 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:27:16,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 17:27:16,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:27:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3610 backedges. 2231 proven. 54 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2024-11-08 17:27:16,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:27:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3610 backedges. 2231 proven. 54 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2024-11-08 17:27:16,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591657951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:27:16,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:27:16,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 29 [2024-11-08 17:27:16,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147358586] [2024-11-08 17:27:16,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:27:16,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 17:27:16,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:27:16,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 17:27:16,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2024-11-08 17:27:16,737 INFO L87 Difference]: Start difference. First operand 1108 states and 1194 transitions. Second operand has 29 states, 29 states have (on average 9.10344827586207) internal successors, (264), 29 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:27:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:27:19,021 INFO L93 Difference]: Finished difference Result 1169 states and 1256 transitions. [2024-11-08 17:27:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-08 17:27:19,022 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.10344827586207) internal successors, (264), 29 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2024-11-08 17:27:19,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:27:19,025 INFO L225 Difference]: With dead ends: 1169 [2024-11-08 17:27:19,025 INFO L226 Difference]: Without dead ends: 1169 [2024-11-08 17:27:19,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 618 SyntacticMatches, 5 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6156 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3522, Invalid=12734, Unknown=0, NotChecked=0, Total=16256 [2024-11-08 17:27:19,029 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 896 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:27:19,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 322 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 17:27:19,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2024-11-08 17:27:19,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 941. [2024-11-08 17:27:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 939 states have (on average 1.0766773162939298) internal successors, (1011), 940 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:27:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1011 transitions. [2024-11-08 17:27:19,048 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1011 transitions. Word has length 321 [2024-11-08 17:27:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:27:19,048 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1011 transitions. [2024-11-08 17:27:19,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.10344827586207) internal successors, (264), 29 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:27:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1011 transitions. [2024-11-08 17:27:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-11-08 17:27:19,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:27:19,052 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 28, 28, 28, 28, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:27:19,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 17:27:19,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:27:19,252 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:27:19,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:27:19,253 INFO L85 PathProgramCache]: Analyzing trace with hash 17025131, now seen corresponding path program 5 times [2024-11-08 17:27:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:27:19,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238641633] [2024-11-08 17:27:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:27:19,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:27:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:27:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5129 backedges. 2605 proven. 826 refuted. 0 times theorem prover too weak. 1698 trivial. 0 not checked. [2024-11-08 17:27:20,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:27:20,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238641633] [2024-11-08 17:27:20,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238641633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:27:20,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521121833] [2024-11-08 17:27:20,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 17:27:20,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:27:20,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:27:20,303 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:27:20,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 17:27:39,553 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-08 17:27:39,554 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:27:39,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 17:27:39,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:27:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5129 backedges. 2704 proven. 726 refuted. 0 times theorem prover too weak. 1699 trivial. 0 not checked. [2024-11-08 17:27:39,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:27:40,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5129 backedges. 2704 proven. 726 refuted. 0 times theorem prover too weak. 1699 trivial. 0 not checked. [2024-11-08 17:27:40,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521121833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:27:40,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:27:40,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 30 [2024-11-08 17:27:40,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150832948] [2024-11-08 17:27:40,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:27:40,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-08 17:27:40,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:27:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-08 17:27:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2024-11-08 17:27:40,313 INFO L87 Difference]: Start difference. First operand 941 states and 1011 transitions. Second operand has 30 states, 30 states have (on average 7.633333333333334) internal successors, (229), 30 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:27:41,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:27:41,141 INFO L93 Difference]: Finished difference Result 723 states and 773 transitions. [2024-11-08 17:27:41,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 17:27:41,141 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.633333333333334) internal successors, (229), 30 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2024-11-08 17:27:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:27:41,143 INFO L225 Difference]: With dead ends: 723 [2024-11-08 17:27:41,143 INFO L226 Difference]: Without dead ends: 723 [2024-11-08 17:27:41,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 749 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 17:27:41,145 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 415 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:27:41,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 331 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:27:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-08 17:27:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2024-11-08 17:27:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 721 states have (on average 1.072122052704577) internal successors, (773), 722 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:27:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 773 transitions. [2024-11-08 17:27:41,157 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 773 transitions. Word has length 380 [2024-11-08 17:27:41,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:27:41,157 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 773 transitions. [2024-11-08 17:27:41,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.633333333333334) internal successors, (229), 30 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:27:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 773 transitions. [2024-11-08 17:27:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-08 17:27:41,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:27:41,161 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 39, 33, 33, 33, 33, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:27:41,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-08 17:27:41,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 17:27:41,362 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:27:41,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:27:41,362 INFO L85 PathProgramCache]: Analyzing trace with hash 39613484, now seen corresponding path program 6 times [2024-11-08 17:27:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:27:41,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192822600] [2024-11-08 17:27:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:27:41,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:27:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:27:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6870 backedges. 4983 proven. 891 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2024-11-08 17:27:42,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:27:42,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192822600] [2024-11-08 17:27:42,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192822600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:27:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14600207] [2024-11-08 17:27:42,427 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 17:27:42,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:27:42,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:27:42,429 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:27:42,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 17:28:11,786 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2024-11-08 17:28:11,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:28:11,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:28:11,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:28:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6870 backedges. 2163 proven. 3614 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2024-11-08 17:28:12,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:28:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6870 backedges. 2163 proven. 3614 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2024-11-08 17:28:13,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14600207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:28:13,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:28:13,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 41 [2024-11-08 17:28:13,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148499487] [2024-11-08 17:28:13,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:28:13,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 17:28:13,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:13,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 17:28:13,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1346, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 17:28:13,252 INFO L87 Difference]: Start difference. First operand 723 states and 773 transitions. Second operand has 41 states, 41 states have (on average 10.731707317073171) internal successors, (440), 41 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:28:23,338 INFO L93 Difference]: Finished difference Result 3229 states and 3502 transitions. [2024-11-08 17:28:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2024-11-08 17:28:23,339 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 10.731707317073171) internal successors, (440), 41 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 436 [2024-11-08 17:28:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:28:23,349 INFO L225 Difference]: With dead ends: 3229 [2024-11-08 17:28:23,349 INFO L226 Difference]: Without dead ends: 3229 [2024-11-08 17:28:23,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1213 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54217 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=16476, Invalid=117846, Unknown=0, NotChecked=0, Total=134322 [2024-11-08 17:28:23,363 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 1727 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:28:23,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 467 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:28:23,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2024-11-08 17:28:23,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 2241. [2024-11-08 17:28:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2239 states have (on average 1.0643144260830728) internal successors, (2383), 2240 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 2383 transitions. [2024-11-08 17:28:23,413 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 2383 transitions. Word has length 436 [2024-11-08 17:28:23,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:28:23,414 INFO L471 AbstractCegarLoop]: Abstraction has 2241 states and 2383 transitions. [2024-11-08 17:28:23,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.731707317073171) internal successors, (440), 41 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 2383 transitions. [2024-11-08 17:28:23,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-11-08 17:28:23,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:28:23,421 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 49, 45, 45, 45, 45, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 2, 1, 1, 1] [2024-11-08 17:28:23,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-08 17:28:23,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 17:28:23,622 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:28:23,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:23,623 INFO L85 PathProgramCache]: Analyzing trace with hash 688857323, now seen corresponding path program 7 times [2024-11-08 17:28:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:23,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577749397] [2024-11-08 17:28:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:23,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 11469 backedges. 7604 proven. 1569 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2024-11-08 17:28:25,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577749397] [2024-11-08 17:28:25,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577749397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:28:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791867396] [2024-11-08 17:28:25,357 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 17:28:25,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:28:25,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:28:25,359 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:28:25,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 17:28:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:26,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 17:28:26,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:28:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 11469 backedges. 7714 proven. 1459 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2024-11-08 17:28:26,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:28:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11469 backedges. 7714 proven. 1459 refuted. 0 times theorem prover too weak. 2296 trivial. 0 not checked. [2024-11-08 17:28:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791867396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:28:27,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:28:27,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 27 [2024-11-08 17:28:27,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533001712] [2024-11-08 17:28:27,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:28:27,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 17:28:27,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 17:28:27,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2024-11-08 17:28:27,072 INFO L87 Difference]: Start difference. First operand 2241 states and 2383 transitions. Second operand has 27 states, 27 states have (on average 8.555555555555555) internal successors, (231), 27 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:27,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:28:27,645 INFO L93 Difference]: Finished difference Result 2329 states and 2463 transitions. [2024-11-08 17:28:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 17:28:27,645 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.555555555555555) internal successors, (231), 27 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 547 [2024-11-08 17:28:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:28:27,651 INFO L225 Difference]: With dead ends: 2329 [2024-11-08 17:28:27,651 INFO L226 Difference]: Without dead ends: 2329 [2024-11-08 17:28:27,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1125 GetRequests, 1070 SyntacticMatches, 15 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=465, Invalid=1257, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 17:28:27,652 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 98 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:28:27,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 581 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 17:28:27,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2024-11-08 17:28:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2281. [2024-11-08 17:28:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 2279 states have (on average 1.0596752961825362) internal successors, (2415), 2280 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 2415 transitions. [2024-11-08 17:28:27,684 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 2415 transitions. Word has length 547 [2024-11-08 17:28:27,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:28:27,685 INFO L471 AbstractCegarLoop]: Abstraction has 2281 states and 2415 transitions. [2024-11-08 17:28:27,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.555555555555555) internal successors, (231), 27 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 2415 transitions. [2024-11-08 17:28:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2024-11-08 17:28:27,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:28:27,691 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 49, 49, 49, 49, 49, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 2, 1, 1, 1] [2024-11-08 17:28:27,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-08 17:28:27,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-08 17:28:27,892 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:28:27,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:27,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1225571573, now seen corresponding path program 8 times [2024-11-08 17:28:27,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:27,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245804749] [2024-11-08 17:28:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:27,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12257 backedges. 5247 proven. 429 refuted. 0 times theorem prover too weak. 6581 trivial. 0 not checked. [2024-11-08 17:28:29,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245804749] [2024-11-08 17:28:29,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245804749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:28:29,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135348441] [2024-11-08 17:28:29,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:28:29,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:28:29,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:28:29,766 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:28:29,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 17:28:30,458 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:28:30,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:28:30,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 2319 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 17:28:30,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:28:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12257 backedges. 9102 proven. 1184 refuted. 0 times theorem prover too weak. 1971 trivial. 0 not checked. [2024-11-08 17:28:31,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:28:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12257 backedges. 9102 proven. 1184 refuted. 0 times theorem prover too weak. 1971 trivial. 0 not checked. [2024-11-08 17:28:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135348441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:28:31,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:28:31,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 36 [2024-11-08 17:28:31,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492386757] [2024-11-08 17:28:31,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:28:31,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-08 17:28:31,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:31,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-08 17:28:31,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1024, Unknown=0, NotChecked=0, Total=1260 [2024-11-08 17:28:31,787 INFO L87 Difference]: Start difference. First operand 2281 states and 2415 transitions. Second operand has 36 states, 36 states have (on average 8.972222222222221) internal successors, (323), 36 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:33,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:28:33,623 INFO L93 Difference]: Finished difference Result 2904 states and 3061 transitions. [2024-11-08 17:28:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-08 17:28:33,623 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 8.972222222222221) internal successors, (323), 36 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 563 [2024-11-08 17:28:33,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:28:33,628 INFO L225 Difference]: With dead ends: 2904 [2024-11-08 17:28:33,629 INFO L226 Difference]: Without dead ends: 2904 [2024-11-08 17:28:33,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1094 SyntacticMatches, 16 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1302, Invalid=5504, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 17:28:33,630 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 150 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:28:33,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 455 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 17:28:33,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2024-11-08 17:28:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2522. [2024-11-08 17:28:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2520 states have (on average 1.0583333333333333) internal successors, (2667), 2521 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:33,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 2667 transitions. [2024-11-08 17:28:33,667 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 2667 transitions. Word has length 563 [2024-11-08 17:28:33,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:28:33,667 INFO L471 AbstractCegarLoop]: Abstraction has 2522 states and 2667 transitions. [2024-11-08 17:28:33,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.972222222222221) internal successors, (323), 36 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:33,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 2667 transitions. [2024-11-08 17:28:33,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2024-11-08 17:28:33,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:28:33,674 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 52, 52, 49, 49, 49, 49, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 2, 1, 1, 1] [2024-11-08 17:28:33,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-08 17:28:33,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-08 17:28:33,875 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:28:33,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1994498318, now seen corresponding path program 9 times [2024-11-08 17:28:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:33,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985677723] [2024-11-08 17:28:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:33,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13040 backedges. 8957 proven. 2330 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2024-11-08 17:28:35,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:35,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985677723] [2024-11-08 17:28:35,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985677723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:28:35,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621533167] [2024-11-08 17:28:35,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:28:35,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:28:35,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:28:35,407 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:28:35,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-08 17:28:37,745 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 17:28:37,745 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:28:37,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-08 17:28:37,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:28:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13040 backedges. 6903 proven. 4890 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2024-11-08 17:28:38,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:28:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13040 backedges. 6903 proven. 4890 refuted. 0 times theorem prover too weak. 1247 trivial. 0 not checked. [2024-11-08 17:28:39,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621533167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:28:39,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:28:39,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 39 [2024-11-08 17:28:39,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913843636] [2024-11-08 17:28:39,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:28:39,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 17:28:39,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 17:28:39,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 17:28:39,553 INFO L87 Difference]: Start difference. First operand 2522 states and 2667 transitions. Second operand has 39 states, 39 states have (on average 8.205128205128204) internal successors, (320), 39 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:40,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:28:40,567 INFO L93 Difference]: Finished difference Result 2578 states and 2715 transitions. [2024-11-08 17:28:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 17:28:40,568 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 8.205128205128204) internal successors, (320), 39 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 578 [2024-11-08 17:28:40,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:28:40,574 INFO L225 Difference]: With dead ends: 2578 [2024-11-08 17:28:40,575 INFO L226 Difference]: Without dead ends: 2578 [2024-11-08 17:28:40,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1200 GetRequests, 1127 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=944, Invalid=3216, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 17:28:40,575 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 120 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:28:40,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 764 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:28:40,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2024-11-08 17:28:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 2546. [2024-11-08 17:28:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2544 states have (on average 1.0546383647798743) internal successors, (2683), 2545 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:40,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 2683 transitions. [2024-11-08 17:28:40,606 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 2683 transitions. Word has length 578 [2024-11-08 17:28:40,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:28:40,607 INFO L471 AbstractCegarLoop]: Abstraction has 2546 states and 2683 transitions. [2024-11-08 17:28:40,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.205128205128204) internal successors, (320), 39 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:40,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 2683 transitions. [2024-11-08 17:28:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2024-11-08 17:28:40,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:28:40,633 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 52, 52, 52, 52, 52, 52, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 2, 1, 1, 1] [2024-11-08 17:28:40,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-08 17:28:40,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-08 17:28:40,834 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2024-11-08 17:28:40,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1293780566, now seen corresponding path program 10 times [2024-11-08 17:28:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:40,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113700040] [2024-11-08 17:28:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:40,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 13673 backedges. 10455 proven. 2002 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2024-11-08 17:28:42,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:42,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113700040] [2024-11-08 17:28:42,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113700040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:28:42,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217371366] [2024-11-08 17:28:42,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 17:28:42,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:28:42,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:28:42,471 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:28:42,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223a14b7-2ff0-4520-b668-e0c3cea9af7a/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process