./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/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_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/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_96acdf09-851c-42e6-882f-55c79db73729/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 c0706d1a5964bb8391155a217bd6084c2519a4607ef121976461541c97aecebc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:18:56,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:18:56,578 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 19:18:56,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:18:56,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:18:56,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:18:56,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:18:56,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:18:56,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:18:56,645 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:18:56,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:18:56,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:18:56,647 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:18:56,647 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:18:56,650 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:18:56,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:18:56,651 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:18:56,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:18:56,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:18:56,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:18:56,653 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 19:18:56,657 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 19:18:56,657 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 19:18:56,658 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:18:56,658 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 19:18:56,659 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:18:56,659 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 19:18:56,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:18:56,660 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:18:56,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:18:56,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:18:56,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:18:56,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:18:56,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:18:56,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:18:56,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:18:56,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:18:56,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:18:56,665 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:18:56,665 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:18:56,665 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:18:56,666 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:18:56,666 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_96acdf09-851c-42e6-882f-55c79db73729/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0706d1a5964bb8391155a217bd6084c2519a4607ef121976461541c97aecebc [2024-11-08 19:18:56,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:18:57,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:18:57,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:18:57,012 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:18:57,013 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:18:57,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.i Unable to find full path for "g++" [2024-11-08 19:18:59,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:18:59,441 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:18:59,442 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.i [2024-11-08 19:18:59,462 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/data/9bd792862/cd6fd53226bf43e0aa6da450d82f523a/FLAG0ba917fa0 [2024-11-08 19:18:59,484 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/data/9bd792862/cd6fd53226bf43e0aa6da450d82f523a [2024-11-08 19:18:59,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:18:59,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:18:59,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:18:59,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:18:59,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:18:59,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:18:59" (1/1) ... [2024-11-08 19:18:59,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc5d7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:18:59, skipping insertion in model container [2024-11-08 19:18:59,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:18:59" (1/1) ... [2024-11-08 19:18:59,564 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:18:59,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:18:59,991 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:19:00,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:19:00,071 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:19:00,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00 WrapperNode [2024-11-08 19:19:00,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:19:00,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:19:00,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:19:00,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:19:00,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,125 INFO L138 Inliner]: procedures = 122, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2024-11-08 19:19:00,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:19:00,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:19:00,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:19:00,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:19:00,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,151 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,171 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-08 19:19:00,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:19:00,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:19:00,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:19:00,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:19:00,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (1/1) ... [2024-11-08 19:19:00,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:19:00,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:19:00,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:19:00,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:19:00,270 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-08 19:19:00,270 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-08 19:19:00,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 19:19:00,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 19:19:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 19:19:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 19:19:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 19:19:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:19:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 19:19:00,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 19:19:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 19:19:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 19:19:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 19:19:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:19:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 19:19:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:19:00,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:19:00,453 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:19:00,467 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:19:00,508 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-08 19:19:00,832 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-11-08 19:19:00,832 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:19:00,854 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:19:00,855 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 19:19:00,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:19:00 BoogieIcfgContainer [2024-11-08 19:19:00,856 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:19:00,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:19:00,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:19:00,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:19:00,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:18:59" (1/3) ... [2024-11-08 19:19:00,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e41607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:19:00, skipping insertion in model container [2024-11-08 19:19:00,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:19:00" (2/3) ... [2024-11-08 19:19:00,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e41607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:19:00, skipping insertion in model container [2024-11-08 19:19:00,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:19:00" (3/3) ... [2024-11-08 19:19:00,872 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-2.i [2024-11-08 19:19:00,893 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:19:00,893 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-11-08 19:19:00,947 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:19:00,954 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;@490c134d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:19:00,954 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-08 19:19:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 65 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 19:19:00,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:00,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 19:19:00,968 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:00,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:00,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1079622, now seen corresponding path program 1 times [2024-11-08 19:19:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:00,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015019251] [2024-11-08 19:19:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:00,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:01,243 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 19:19:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015019251] [2024-11-08 19:19:01,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015019251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:19:01,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:19:01,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:19:01,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168485153] [2024-11-08 19:19:01,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:19:01,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:19:01,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:01,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:19:01,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:19:01,288 INFO L87 Difference]: Start difference. First operand has 67 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 65 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:01,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:01,397 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2024-11-08 19:19:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:19:01,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-08 19:19:01,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:01,411 INFO L225 Difference]: With dead ends: 63 [2024-11-08 19:19:01,411 INFO L226 Difference]: Without dead ends: 57 [2024-11-08 19:19:01,413 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 19:19:01,418 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 16 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:01,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 83 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:19:01,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-08 19:19:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-08 19:19:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2024-11-08 19:19:01,455 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 4 [2024-11-08 19:19:01,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:01,455 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2024-11-08 19:19:01,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2024-11-08 19:19:01,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 19:19:01,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:01,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 19:19:01,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:19:01,457 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:01,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1079623, now seen corresponding path program 1 times [2024-11-08 19:19:01,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:01,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736110192] [2024-11-08 19:19:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:01,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:01,593 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 19:19:01,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:01,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736110192] [2024-11-08 19:19:01,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736110192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:19:01,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:19:01,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:19:01,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247217409] [2024-11-08 19:19:01,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:19:01,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:19:01,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:01,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:19:01,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:19:01,598 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:01,659 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2024-11-08 19:19:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:19:01,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-08 19:19:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:01,661 INFO L225 Difference]: With dead ends: 54 [2024-11-08 19:19:01,661 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 19:19:01,662 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 19:19:01,663 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:01,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 76 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:19:01,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 19:19:01,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-08 19:19:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2024-11-08 19:19:01,670 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 4 [2024-11-08 19:19:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:01,671 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2024-11-08 19:19:01,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2024-11-08 19:19:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 19:19:01,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:01,672 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:01,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:19:01,673 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:01,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:01,674 INFO L85 PathProgramCache]: Analyzing trace with hash -401953616, now seen corresponding path program 1 times [2024-11-08 19:19:01,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:01,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932229483] [2024-11-08 19:19:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:01,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:01,829 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 19:19:01,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:01,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932229483] [2024-11-08 19:19:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932229483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:19:01,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:19:01,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:19:01,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994712178] [2024-11-08 19:19:01,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:19:01,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:19:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:01,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:19:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:19:01,833 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:01,895 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-11-08 19:19:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:19:01,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-08 19:19:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:01,897 INFO L225 Difference]: With dead ends: 52 [2024-11-08 19:19:01,897 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 19:19:01,898 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 19:19:01,899 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:01,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 80 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:19:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 19:19:01,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-08 19:19:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.6) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-11-08 19:19:01,906 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2024-11-08 19:19:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:01,907 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-11-08 19:19:01,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-11-08 19:19:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 19:19:01,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:01,908 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:01,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:19:01,908 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:01,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash -401953615, now seen corresponding path program 1 times [2024-11-08 19:19:01,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:01,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704932971] [2024-11-08 19:19:01,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:01,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:02,068 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 19:19:02,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:02,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704932971] [2024-11-08 19:19:02,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704932971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:19:02,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:19:02,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:19:02,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644621485] [2024-11-08 19:19:02,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:19:02,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:19:02,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:02,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:19:02,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:19:02,072 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:02,137 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2024-11-08 19:19:02,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:19:02,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-08 19:19:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:02,139 INFO L225 Difference]: With dead ends: 50 [2024-11-08 19:19:02,139 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 19:19:02,140 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 19:19:02,141 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:02,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:19:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 19:19:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-08 19:19:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.542857142857143) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-11-08 19:19:02,148 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 10 [2024-11-08 19:19:02,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:02,148 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-11-08 19:19:02,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:02,149 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-11-08 19:19:02,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 19:19:02,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:02,150 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:02,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:19:02,151 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:02,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash 444284878, now seen corresponding path program 1 times [2024-11-08 19:19:02,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:02,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781283548] [2024-11-08 19:19:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:02,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:02,255 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 19:19:02,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:02,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781283548] [2024-11-08 19:19:02,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781283548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:19:02,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:19:02,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:19:02,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124800814] [2024-11-08 19:19:02,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:19:02,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:19:02,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:19:02,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:19:02,266 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:02,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:02,292 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2024-11-08 19:19:02,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:19:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 19:19:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:02,293 INFO L225 Difference]: With dead ends: 56 [2024-11-08 19:19:02,294 INFO L226 Difference]: Without dead ends: 56 [2024-11-08 19:19:02,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:19:02,295 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:02,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 94 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:19:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-08 19:19:02,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2024-11-08 19:19:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:02,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-11-08 19:19:02,302 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 11 [2024-11-08 19:19:02,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:02,303 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-11-08 19:19:02,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:02,303 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-11-08 19:19:02,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 19:19:02,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:02,304 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:02,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:19:02,305 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:02,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash -329446844, now seen corresponding path program 1 times [2024-11-08 19:19:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:02,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704617002] [2024-11-08 19:19:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:02,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:19:02,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:02,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704617002] [2024-11-08 19:19:02,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704617002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:19:02,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341472341] [2024-11-08 19:19:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:02,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:19:02,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:19:02,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:19:02,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:19:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:02,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 19:19:02,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:19:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:19:02,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:19:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:19:02,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341472341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:19:02,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:19:02,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 19:19:02,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013334352] [2024-11-08 19:19:02,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:19:02,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:19:02,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:19:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:19:02,832 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:02,902 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2024-11-08 19:19:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:19:02,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 19:19:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:02,905 INFO L225 Difference]: With dead ends: 69 [2024-11-08 19:19:02,906 INFO L226 Difference]: Without dead ends: 69 [2024-11-08 19:19:02,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:19:02,907 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:02,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 142 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:19:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-08 19:19:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-08 19:19:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 68 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 19:19:02,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2024-11-08 19:19:02,921 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 17 [2024-11-08 19:19:02,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:02,922 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2024-11-08 19:19:02,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:02,922 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2024-11-08 19:19:02,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 19:19:02,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:02,927 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:02,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:19:03,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:19:03,128 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:03,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash 865257126, now seen corresponding path program 2 times [2024-11-08 19:19:03,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:03,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644335342] [2024-11-08 19:19:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:03,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 19:19:03,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:03,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644335342] [2024-11-08 19:19:03,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644335342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:19:03,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:19:03,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:19:03,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302640077] [2024-11-08 19:19:03,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:19:03,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:19:03,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:19:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:19:03,428 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:03,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:03,603 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2024-11-08 19:19:03,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:19:03,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-08 19:19:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:03,605 INFO L225 Difference]: With dead ends: 66 [2024-11-08 19:19:03,605 INFO L226 Difference]: Without dead ends: 66 [2024-11-08 19:19:03,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:19:03,607 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 17 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:03,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 105 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:19:03,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-08 19:19:03,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-08 19:19:03,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2024-11-08 19:19:03,620 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 35 [2024-11-08 19:19:03,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:03,621 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2024-11-08 19:19:03,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2024-11-08 19:19:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 19:19:03,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:03,622 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:03,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 19:19:03,625 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:03,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:03,625 INFO L85 PathProgramCache]: Analyzing trace with hash 865257127, now seen corresponding path program 1 times [2024-11-08 19:19:03,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:03,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794961250] [2024-11-08 19:19:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 19:19:04,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:04,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794961250] [2024-11-08 19:19:04,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794961250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:19:04,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:19:04,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:19:04,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052523772] [2024-11-08 19:19:04,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:19:04,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:19:04,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:04,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:19:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:19:04,060 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:04,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:04,229 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2024-11-08 19:19:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:19:04,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-08 19:19:04,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:04,231 INFO L225 Difference]: With dead ends: 73 [2024-11-08 19:19:04,231 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 19:19:04,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:19:04,232 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:04,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 137 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:19:04,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 19:19:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2024-11-08 19:19:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-08 19:19:04,245 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 35 [2024-11-08 19:19:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:04,246 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-08 19:19:04,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-08 19:19:04,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 19:19:04,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:04,247 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:04,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 19:19:04,248 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:04,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:04,248 INFO L85 PathProgramCache]: Analyzing trace with hash 166907448, now seen corresponding path program 1 times [2024-11-08 19:19:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:04,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433737396] [2024-11-08 19:19:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:04,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 19:19:05,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433737396] [2024-11-08 19:19:05,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433737396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:19:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553709956] [2024-11-08 19:19:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:05,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:19:05,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:19:05,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:19:05,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:19:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:06,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 19:19:06,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:19:06,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-08 19:19:06,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 19:19:06,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-08 19:19:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 19:19:06,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:19:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 19:19:07,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553709956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:19:07,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:19:07,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 29 [2024-11-08 19:19:07,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715045496] [2024-11-08 19:19:07,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:19:07,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 19:19:07,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:07,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 19:19:07,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2024-11-08 19:19:07,421 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 29 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:08,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:08,138 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2024-11-08 19:19:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 19:19:08,139 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-08 19:19:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:08,144 INFO L225 Difference]: With dead ends: 69 [2024-11-08 19:19:08,144 INFO L226 Difference]: Without dead ends: 69 [2024-11-08 19:19:08,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 19:19:08,145 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 23 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:08,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 395 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 19:19:08,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-08 19:19:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-08 19:19:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 68 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 19:19:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2024-11-08 19:19:08,154 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 39 [2024-11-08 19:19:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:08,155 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2024-11-08 19:19:08,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2024-11-08 19:19:08,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 19:19:08,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:08,159 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:08,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 19:19:08,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:19:08,360 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:08,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:08,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1496617879, now seen corresponding path program 1 times [2024-11-08 19:19:08,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:08,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158194497] [2024-11-08 19:19:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:08,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:10,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:10,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158194497] [2024-11-08 19:19:10,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158194497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:19:10,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78455422] [2024-11-08 19:19:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:10,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:19:10,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:19:10,070 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:19:10,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:19:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:10,292 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-08 19:19:10,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:19:10,349 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 19:19:10,429 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 19:19:10,430 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 19:19:10,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 19:19:10,532 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 15 treesize of output 1 [2024-11-08 19:19:10,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-08 19:19:10,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 19:19:10,747 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-08 19:19:10,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2024-11-08 19:19:10,768 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 19:19:10,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-08 19:19:11,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-08 19:19:11,234 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:19:11,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 35 [2024-11-08 19:19:11,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:11,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 32 [2024-11-08 19:19:11,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 19:19:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:11,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:19:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:12,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78455422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:19:12,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:19:12,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 32 [2024-11-08 19:19:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204513878] [2024-11-08 19:19:12,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:19:12,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 19:19:12,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:12,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 19:19:12,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 19:19:12,177 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 33 states, 32 states have (on average 2.53125) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:13,403 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2024-11-08 19:19:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 19:19:13,404 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.53125) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 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 41 [2024-11-08 19:19:13,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:13,404 INFO L225 Difference]: With dead ends: 81 [2024-11-08 19:19:13,404 INFO L226 Difference]: Without dead ends: 81 [2024-11-08 19:19:13,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 19:19:13,406 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:13,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 305 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 19:19:13,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-08 19:19:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2024-11-08 19:19:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 73 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2024-11-08 19:19:13,417 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 41 [2024-11-08 19:19:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:13,418 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2024-11-08 19:19:13,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.53125) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:13,418 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2024-11-08 19:19:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 19:19:13,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:13,419 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:13,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 19:19:13,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:19:13,620 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:13,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:13,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1496617880, now seen corresponding path program 1 times [2024-11-08 19:19:13,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:13,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11239388] [2024-11-08 19:19:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:13,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:15,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:15,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11239388] [2024-11-08 19:19:15,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11239388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:19:15,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676784494] [2024-11-08 19:19:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:15,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:19:15,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:19:15,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:19:15,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:19:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:15,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 19:19:15,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:19:15,492 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 19:19:15,546 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 19:19:15,547 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 19:19:15,621 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 15 treesize of output 1 [2024-11-08 19:19:15,631 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 19:19:15,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 19:19:15,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-08 19:19:15,793 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-08 19:19:15,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2024-11-08 19:19:15,817 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-08 19:19:15,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 19:19:16,134 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:19:16,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 35 [2024-11-08 19:19:16,145 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:19:16,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 46 [2024-11-08 19:19:16,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:16,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 32 [2024-11-08 19:19:16,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:16,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 28 [2024-11-08 19:19:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:16,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:19:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:17,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676784494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:19:17,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:19:17,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 30 [2024-11-08 19:19:17,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199556500] [2024-11-08 19:19:17,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:19:17,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 19:19:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 19:19:17,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2024-11-08 19:19:17,178 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 31 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:18,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:18,230 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2024-11-08 19:19:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 19:19:18,231 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 31 states have internal predecessors, (80), 0 states have call successors, (0), 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 41 [2024-11-08 19:19:18,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:18,231 INFO L225 Difference]: With dead ends: 80 [2024-11-08 19:19:18,232 INFO L226 Difference]: Without dead ends: 80 [2024-11-08 19:19:18,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=172, Invalid=1310, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 19:19:18,233 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 49 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:18,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 392 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 19:19:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-08 19:19:18,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2024-11-08 19:19:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 75 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2024-11-08 19:19:18,238 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 41 [2024-11-08 19:19:18,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:18,239 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2024-11-08 19:19:18,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 31 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2024-11-08 19:19:18,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 19:19:18,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:18,240 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:18,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:19:18,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 19:19:18,441 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:18,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:18,442 INFO L85 PathProgramCache]: Analyzing trace with hash -849487161, now seen corresponding path program 1 times [2024-11-08 19:19:18,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:18,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929205263] [2024-11-08 19:19:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 19:19:18,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:18,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929205263] [2024-11-08 19:19:18,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929205263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:19:18,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:19:18,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:19:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333516239] [2024-11-08 19:19:18,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:19:18,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:19:18,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:19:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:19:18,870 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:19,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:19,084 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2024-11-08 19:19:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:19:19,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 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 42 [2024-11-08 19:19:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:19,085 INFO L225 Difference]: With dead ends: 89 [2024-11-08 19:19:19,086 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 19:19:19,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:19:19,087 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:19,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 160 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:19:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 19:19:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2024-11-08 19:19:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 80 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2024-11-08 19:19:19,092 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 42 [2024-11-08 19:19:19,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:19,092 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2024-11-08 19:19:19,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2024-11-08 19:19:19,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 19:19:19,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:19,094 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:19,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 19:19:19,094 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:19,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1089291607, now seen corresponding path program 1 times [2024-11-08 19:19:19,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:19,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697084585] [2024-11-08 19:19:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:19,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:21,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:21,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697084585] [2024-11-08 19:19:21,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697084585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:19:21,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125205071] [2024-11-08 19:19:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:21,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:19:21,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:19:21,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:19:21,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:19:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:21,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-08 19:19:21,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:19:22,041 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 19:19:22,230 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 15 treesize of output 1 [2024-11-08 19:19:22,237 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 19:19:22,254 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-08 19:19:22,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-08 19:19:22,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 19:19:22,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-11-08 19:19:22,346 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-08 19:19:22,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2024-11-08 19:19:22,464 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-08 19:19:22,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2024-11-08 19:19:22,483 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-08 19:19:22,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 19:19:22,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-08 19:19:22,942 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:19:22,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 37 [2024-11-08 19:19:22,961 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-08 19:19:22,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2024-11-08 19:19:22,976 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:19:22,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 42 [2024-11-08 19:19:23,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:23,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 34 [2024-11-08 19:19:23,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:23,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 30 [2024-11-08 19:19:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:23,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:19:29,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:29,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 76 treesize of output 80 [2024-11-08 19:19:29,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:29,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 76 treesize of output 80 [2024-11-08 19:19:38,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:38,883 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2024-11-08 19:19:38,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:38,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 95 treesize of output 97 [2024-11-08 19:19:38,916 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 65 treesize of output 61 [2024-11-08 19:19:38,925 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 91 treesize of output 83 [2024-11-08 19:19:39,009 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 8 treesize of output 4 [2024-11-08 19:19:39,053 INFO L349 Elim1Store]: treesize reduction 19, result has 62.0 percent of original size [2024-11-08 19:19:39,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 43 [2024-11-08 19:19:39,060 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 48 treesize of output 36 [2024-11-08 19:19:39,067 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 11 treesize of output 7 [2024-11-08 19:19:39,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:39,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-08 19:19:39,087 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:19:39,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-08 19:19:39,139 INFO L349 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2024-11-08 19:19:39,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 37 [2024-11-08 19:19:39,145 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:19:39,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2024-11-08 19:19:39,175 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:19:39,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2024-11-08 19:19:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:39,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125205071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:19:39,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:19:39,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 18] total 49 [2024-11-08 19:19:39,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410581187] [2024-11-08 19:19:39,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:19:39,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 19:19:39,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:39,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 19:19:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2101, Unknown=88, NotChecked=0, Total=2352 [2024-11-08 19:19:39,425 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:45,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:45,602 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2024-11-08 19:19:45,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 19:19:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 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 45 [2024-11-08 19:19:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:45,604 INFO L225 Difference]: With dead ends: 81 [2024-11-08 19:19:45,604 INFO L226 Difference]: Without dead ends: 81 [2024-11-08 19:19:45,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=322, Invalid=3249, Unknown=89, NotChecked=0, Total=3660 [2024-11-08 19:19:45,605 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:45,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 638 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 19:19:45,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-08 19:19:45,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-08 19:19:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 80 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 19:19:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2024-11-08 19:19:45,610 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 45 [2024-11-08 19:19:45,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:45,610 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2024-11-08 19:19:45,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2024-11-08 19:19:45,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 19:19:45,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:45,612 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:45,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 19:19:45,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 19:19:45,813 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:45,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:45,813 INFO L85 PathProgramCache]: Analyzing trace with hash -505210787, now seen corresponding path program 1 times [2024-11-08 19:19:45,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:45,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51373814] [2024-11-08 19:19:45,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:45,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:46,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:46,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51373814] [2024-11-08 19:19:46,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51373814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:19:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545679334] [2024-11-08 19:19:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:46,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:19:46,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:19:46,670 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:19:46,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 19:19:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:46,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-08 19:19:46,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:19:46,895 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 19:19:46,931 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-08 19:19:46,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 19:19:46,962 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-08 19:19:46,962 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 12 treesize of output 14 [2024-11-08 19:19:46,992 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-08 19:19:46,992 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 12 treesize of output 14 [2024-11-08 19:19:47,043 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-08 19:19:47,044 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 19:19:47,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:19:47,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-11-08 19:19:47,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2024-11-08 19:19:47,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-11-08 19:19:47,277 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 16 treesize of output 8 [2024-11-08 19:19:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:19:47,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:19:47,315 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1218 (Array Int Int))) (not (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1218) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) is different from false [2024-11-08 19:19:47,325 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1218 (Array Int Int))) (not (= |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1218) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))) is different from false [2024-11-08 19:19:47,335 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1218 (Array Int Int)) (v_ArrVal_1217 (Array Int Int))) (or (not (= v_ArrVal_1217 (let ((.cse0 (+ 4 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) .cse0 (select v_ArrVal_1217 .cse0))))) (not (= |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_ArrVal_1217) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1218) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))))) is different from false [2024-11-08 19:19:47,341 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 41 treesize of output 39 [2024-11-08 19:19:47,354 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 6 treesize of output 4 [2024-11-08 19:19:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 10 not checked. [2024-11-08 19:19:47,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545679334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:19:47,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:19:47,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 27 [2024-11-08 19:19:47,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489974081] [2024-11-08 19:19:47,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:19:47,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 19:19:47,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:19:47,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 19:19:47,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=486, Unknown=3, NotChecked=138, Total=702 [2024-11-08 19:19:47,660 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:48,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:19:48,136 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2024-11-08 19:19:48,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 19:19:48,137 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 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 46 [2024-11-08 19:19:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:19:48,137 INFO L225 Difference]: With dead ends: 79 [2024-11-08 19:19:48,137 INFO L226 Difference]: Without dead ends: 79 [2024-11-08 19:19:48,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 83 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=639, Unknown=3, NotChecked=162, Total=930 [2024-11-08 19:19:48,138 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:19:48,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 535 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 423 Invalid, 0 Unknown, 91 Unchecked, 0.3s Time] [2024-11-08 19:19:48,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-08 19:19:48,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-08 19:19:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 78 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2024-11-08 19:19:48,142 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 46 [2024-11-08 19:19:48,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:19:48,143 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2024-11-08 19:19:48,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:19:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2024-11-08 19:19:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 19:19:48,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:19:48,144 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:19:48,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 19:19:48,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 19:19:48,349 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:19:48,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:19:48,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1175136200, now seen corresponding path program 2 times [2024-11-08 19:19:48,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:19:48,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84656520] [2024-11-08 19:19:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:19:48,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:19:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:19:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:19:50,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:19:50,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84656520] [2024-11-08 19:19:50,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84656520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:19:50,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374377168] [2024-11-08 19:19:50,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:19:50,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:19:50,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:19:50,706 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:19:50,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 19:19:50,954 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:19:50,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:19:50,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-08 19:19:50,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:19:51,012 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 19:19:51,147 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-08 19:19:51,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 19:19:51,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:19:51,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-08 19:19:51,385 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-08 19:19:51,385 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 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-08 19:19:51,483 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 15 treesize of output 1 [2024-11-08 19:19:51,507 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-11-08 19:19:51,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 37 [2024-11-08 19:19:51,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 19:19:51,670 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:19:51,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 50 [2024-11-08 19:19:51,944 INFO L349 Elim1Store]: treesize reduction 24, result has 56.4 percent of original size [2024-11-08 19:19:51,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 73 [2024-11-08 19:19:51,971 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-08 19:19:51,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2024-11-08 19:19:53,846 INFO L349 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2024-11-08 19:19:53,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 247 treesize of output 227 [2024-11-08 19:19:53,875 INFO L349 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2024-11-08 19:19:53,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 247 treesize of output 200 [2024-11-08 19:19:54,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:19:54,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 239 treesize of output 287 [2024-11-08 19:20:18,831 WARN L286 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 1082 DAG size of output: 598 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-08 19:20:18,833 INFO L349 Elim1Store]: treesize reduction 1348, result has 47.0 percent of original size [2024-11-08 19:20:18,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 34 new quantified variables, introduced 231 case distinctions, treesize of input 488 treesize of output 1413 [2024-11-08 19:24:56,219 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-08 19:24:56,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-08 19:24:56,221 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-08 19:24:56,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 19:24:56,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 19:24:56,422 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:195) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:290) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 67 more [2024-11-08 19:24:56,426 INFO L158 Benchmark]: Toolchain (without parser) took 356936.86ms. Allocated memory was 178.3MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 129.0MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 985.2MB. Max. memory is 16.1GB. [2024-11-08 19:24:56,427 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory was 90.1MB in the beginning and 90.0MB in the end (delta: 27.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 19:24:56,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 578.99ms. Allocated memory is still 178.3MB. Free memory was 128.4MB in the beginning and 109.2MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 19:24:56,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.83ms. Allocated memory is still 178.3MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 19:24:56,427 INFO L158 Benchmark]: Boogie Preprocessor took 62.07ms. Allocated memory is still 178.3MB. Free memory was 107.1MB in the beginning and 104.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 19:24:56,428 INFO L158 Benchmark]: RCFGBuilder took 663.35ms. Allocated memory is still 178.3MB. Free memory was 104.4MB in the beginning and 132.4MB in the end (delta: -28.0MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2024-11-08 19:24:56,428 INFO L158 Benchmark]: TraceAbstraction took 355566.12ms. Allocated memory was 178.3MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 132.4MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 989.5MB. Max. memory is 16.1GB. [2024-11-08 19:24:56,429 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 130.0MB. Free memory was 90.1MB in the beginning and 90.0MB in the end (delta: 27.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 578.99ms. Allocated memory is still 178.3MB. Free memory was 128.4MB in the beginning and 109.2MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.83ms. Allocated memory is still 178.3MB. Free memory was 109.2MB in the beginning and 107.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.07ms. Allocated memory is still 178.3MB. Free memory was 107.1MB in the beginning and 104.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 663.35ms. Allocated memory is still 178.3MB. Free memory was 104.4MB in the beginning and 132.4MB in the end (delta: -28.0MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 355566.12ms. Allocated memory was 178.3MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 132.4MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 989.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/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_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/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 c0706d1a5964bb8391155a217bd6084c2519a4607ef121976461541c97aecebc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:24:58,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:24:58,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-08 19:24:58,836 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:24:58,837 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:24:58,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:24:58,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:24:58,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:24:58,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:24:58,873 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:24:58,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:24:58,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:24:58,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:24:58,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:24:58,877 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:24:58,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:24:58,878 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:24:58,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:24:58,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:24:58,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:24:58,880 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 19:24:58,884 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 19:24:58,884 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 19:24:58,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:24:58,885 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 19:24:58,885 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 19:24:58,885 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:24:58,885 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 19:24:58,886 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 19:24:58,886 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:24:58,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:24:58,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:24:58,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:24:58,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:24:58,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:24:58,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:24:58,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:24:58,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:24:58,892 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 19:24:58,892 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 19:24:58,892 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:24:58,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:24:58,894 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:24:58,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:24:58,894 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_96acdf09-851c-42e6-882f-55c79db73729/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0706d1a5964bb8391155a217bd6084c2519a4607ef121976461541c97aecebc [2024-11-08 19:24:59,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:24:59,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:24:59,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:24:59,326 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:24:59,326 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:24:59,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.i Unable to find full path for "g++" [2024-11-08 19:25:01,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:25:01,635 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:25:01,635 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-2.i [2024-11-08 19:25:01,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/data/97da816c7/d633b9a898884e859afc18f6b1c670f6/FLAG849776a50 [2024-11-08 19:25:01,674 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/data/97da816c7/d633b9a898884e859afc18f6b1c670f6 [2024-11-08 19:25:01,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:25:01,682 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:25:01,683 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:25:01,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:25:01,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:25:01,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:25:01" (1/1) ... [2024-11-08 19:25:01,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339ade43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:01, skipping insertion in model container [2024-11-08 19:25:01,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:25:01" (1/1) ... [2024-11-08 19:25:01,759 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:25:02,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:25:02,250 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:25:02,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:25:02,358 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:25:02,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02 WrapperNode [2024-11-08 19:25:02,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:25:02,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:25:02,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:25:02,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:25:02,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,396 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,433 INFO L138 Inliner]: procedures = 125, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2024-11-08 19:25:02,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:25:02,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:25:02,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:25:02,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:25:02,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,466 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,493 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-08 19:25:02,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:25:02,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:25:02,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:25:02,517 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:25:02,518 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (1/1) ... [2024-11-08 19:25:02,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:25:02,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:02,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:25:02,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:25:02,588 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-08 19:25:02,588 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-08 19:25:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-08 19:25:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-08 19:25:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 19:25:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:25:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 19:25:02,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 19:25:02,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 19:25:02,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 19:25:02,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 19:25:02,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-08 19:25:02,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-08 19:25:02,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 19:25:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-08 19:25:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:25:02,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:25:02,761 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:25:02,765 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:25:02,796 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-08 19:25:03,243 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-11-08 19:25:03,243 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:25:03,257 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:25:03,257 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-08 19:25:03,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:25:03 BoogieIcfgContainer [2024-11-08 19:25:03,258 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:25:03,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:25:03,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:25:03,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:25:03,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:25:01" (1/3) ... [2024-11-08 19:25:03,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71008c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:25:03, skipping insertion in model container [2024-11-08 19:25:03,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:25:02" (2/3) ... [2024-11-08 19:25:03,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71008c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:25:03, skipping insertion in model container [2024-11-08 19:25:03,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:25:03" (3/3) ... [2024-11-08 19:25:03,267 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-2.i [2024-11-08 19:25:03,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:25:03,286 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-11-08 19:25:03,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:25:03,341 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;@420a3ab1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:25:03,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-08 19:25:03,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 65 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 19:25:03,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:03,360 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 19:25:03,361 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:03,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:03,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1079622, now seen corresponding path program 1 times [2024-11-08 19:25:03,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:03,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300739478] [2024-11-08 19:25:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:03,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:03,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:03,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:03,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:25:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:03,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:25:03,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:03,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 19:25:03,571 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 19:25:03,571 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:25:03,572 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:03,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300739478] [2024-11-08 19:25:03,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300739478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:25:03,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:25:03,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:25:03,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597181904] [2024-11-08 19:25:03,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:25:03,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:25:03,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:03,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:25:03,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:25:03,617 INFO L87 Difference]: Start difference. First operand has 67 states, 39 states have (on average 1.9230769230769231) internal successors, (75), 65 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:03,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:03,796 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2024-11-08 19:25:03,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:25:03,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-08 19:25:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:03,806 INFO L225 Difference]: With dead ends: 63 [2024-11-08 19:25:03,806 INFO L226 Difference]: Without dead ends: 57 [2024-11-08 19:25:03,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:25:03,812 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 16 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:03,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 83 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:25:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-08 19:25:03,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-08 19:25:03,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 56 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2024-11-08 19:25:03,855 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 4 [2024-11-08 19:25:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:03,857 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2024-11-08 19:25:03,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2024-11-08 19:25:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 19:25:03,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:03,858 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 19:25:03,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:25:04,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:04,064 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:04,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:04,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1079623, now seen corresponding path program 1 times [2024-11-08 19:25:04,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:04,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817629479] [2024-11-08 19:25:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:04,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:04,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:04,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:04,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:25:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:04,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 19:25:04,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:04,168 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 19:25:04,209 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 19:25:04,211 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:25:04,212 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:04,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817629479] [2024-11-08 19:25:04,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817629479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:25:04,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:25:04,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:25:04,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556856340] [2024-11-08 19:25:04,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:25:04,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:25:04,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:04,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:25:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:25:04,217 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:04,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:04,355 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2024-11-08 19:25:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:25:04,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-08 19:25:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:04,356 INFO L225 Difference]: With dead ends: 54 [2024-11-08 19:25:04,357 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 19:25:04,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:25:04,358 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:04,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 76 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:25:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 19:25:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-08 19:25:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2024-11-08 19:25:04,364 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 4 [2024-11-08 19:25:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:04,365 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2024-11-08 19:25:04,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:04,365 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2024-11-08 19:25:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 19:25:04,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:04,366 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:04,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:25:04,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:04,567 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:04,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash -401953616, now seen corresponding path program 1 times [2024-11-08 19:25:04,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:04,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687709705] [2024-11-08 19:25:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:04,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:04,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:04,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:04,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:25:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:04,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 19:25:04,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:04,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 19:25:04,716 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 19:25:04,717 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:25:04,717 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:04,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687709705] [2024-11-08 19:25:04,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687709705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:25:04,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:25:04,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:25:04,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006950665] [2024-11-08 19:25:04,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:25:04,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:25:04,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:04,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:25:04,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:25:04,721 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:04,858 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-11-08 19:25:04,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:25:04,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-08 19:25:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:04,859 INFO L225 Difference]: With dead ends: 52 [2024-11-08 19:25:04,860 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 19:25:04,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 19:25:04,861 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:04,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 80 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:25:04,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 19:25:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-08 19:25:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.6) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-11-08 19:25:04,869 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 10 [2024-11-08 19:25:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:04,870 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-11-08 19:25:04,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:04,870 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-11-08 19:25:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-08 19:25:04,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:04,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:04,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 19:25:05,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:05,072 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:05,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash -401953615, now seen corresponding path program 1 times [2024-11-08 19:25:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:05,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339678371] [2024-11-08 19:25:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:05,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:05,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:05,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:05,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:25:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:05,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 19:25:05,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:05,196 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 19:25:05,222 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 19:25:05,223 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:25:05,224 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:05,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339678371] [2024-11-08 19:25:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339678371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:25:05,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:25:05,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 19:25:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147214392] [2024-11-08 19:25:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:25:05,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:25:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:05,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:25:05,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:25:05,227 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:05,337 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2024-11-08 19:25:05,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:25:05,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-08 19:25:05,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:05,341 INFO L225 Difference]: With dead ends: 50 [2024-11-08 19:25:05,341 INFO L226 Difference]: Without dead ends: 50 [2024-11-08 19:25:05,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 19:25:05,342 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:05,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:25:05,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-08 19:25:05,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-08 19:25:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.542857142857143) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2024-11-08 19:25:05,353 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 10 [2024-11-08 19:25:05,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:05,353 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2024-11-08 19:25:05,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:05,357 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2024-11-08 19:25:05,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 19:25:05,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:05,358 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:05,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:25:05,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:05,559 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:05,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash 444284878, now seen corresponding path program 1 times [2024-11-08 19:25:05,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:05,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002598712] [2024-11-08 19:25:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:05,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:05,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:05,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:05,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:25:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:05,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 19:25:05,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:05,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 19:25:05,763 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 19:25:05,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:25:05,764 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:05,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002598712] [2024-11-08 19:25:05,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002598712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:25:05,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:25:05,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:25:05,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261060357] [2024-11-08 19:25:05,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:25:05,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:25:05,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:25:05,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:25:05,768 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:06,099 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-11-08 19:25:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:25:06,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 19:25:06,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:06,102 INFO L225 Difference]: With dead ends: 54 [2024-11-08 19:25:06,102 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 19:25:06,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:25:06,104 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 30 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:06,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 99 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 19:25:06,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 19:25:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2024-11-08 19:25:06,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 51 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 19:25:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2024-11-08 19:25:06,118 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 11 [2024-11-08 19:25:06,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:06,121 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2024-11-08 19:25:06,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2024-11-08 19:25:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 19:25:06,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:06,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:06,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 19:25:06,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:06,327 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:06,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:06,328 INFO L85 PathProgramCache]: Analyzing trace with hash 444284879, now seen corresponding path program 1 times [2024-11-08 19:25:06,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:06,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096703563] [2024-11-08 19:25:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:06,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:06,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:06,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:06,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 19:25:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:06,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 19:25:06,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:06,464 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 19:25:06,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:25:06,465 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:06,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096703563] [2024-11-08 19:25:06,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096703563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:25:06,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:25:06,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:25:06,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141713546] [2024-11-08 19:25:06,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:25:06,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:25:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:25:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:25:06,468 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:06,493 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-11-08 19:25:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:25:06,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 19:25:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:06,494 INFO L225 Difference]: With dead ends: 52 [2024-11-08 19:25:06,494 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 19:25:06,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 19:25:06,495 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:06,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 86 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:25:06,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 19:25:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2024-11-08 19:25:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 47 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 19:25:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-08 19:25:06,500 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 11 [2024-11-08 19:25:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:06,500 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-08 19:25:06,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-08 19:25:06,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 19:25:06,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:06,501 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:06,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 19:25:06,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:06,702 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:06,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:06,703 INFO L85 PathProgramCache]: Analyzing trace with hash -329446844, now seen corresponding path program 1 times [2024-11-08 19:25:06,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:06,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253399056] [2024-11-08 19:25:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:06,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:06,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:06,705 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:06,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 19:25:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:06,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 19:25:06,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:06,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 19:25:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:25:06,883 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:25:06,884 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253399056] [2024-11-08 19:25:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253399056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:25:06,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:25:06,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:25:06,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499000123] [2024-11-08 19:25:06,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:25:06,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:25:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:06,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:25:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:25:06,886 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:07,229 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2024-11-08 19:25:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:25:07,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 19:25:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:07,230 INFO L225 Difference]: With dead ends: 51 [2024-11-08 19:25:07,230 INFO L226 Difference]: Without dead ends: 51 [2024-11-08 19:25:07,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:25:07,231 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 17 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:07,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 109 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 19:25:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-08 19:25:07,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-11-08 19:25:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:07,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2024-11-08 19:25:07,236 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 17 [2024-11-08 19:25:07,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:07,241 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2024-11-08 19:25:07,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2024-11-08 19:25:07,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 19:25:07,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:07,242 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:07,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 19:25:07,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:07,443 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:07,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:07,444 INFO L85 PathProgramCache]: Analyzing trace with hash -329446843, now seen corresponding path program 1 times [2024-11-08 19:25:07,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:07,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669267306] [2024-11-08 19:25:07,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:07,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:07,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:07,447 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:07,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 19:25:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:07,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:25:07,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:25:07,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:25:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:25:07,741 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:07,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669267306] [2024-11-08 19:25:07,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669267306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:25:07,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:25:07,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2024-11-08 19:25:07,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108446599] [2024-11-08 19:25:07,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:25:07,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:25:07,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:07,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:25:07,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:25:07,744 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:07,817 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2024-11-08 19:25:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:25:07,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-08 19:25:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:07,818 INFO L225 Difference]: With dead ends: 66 [2024-11-08 19:25:07,818 INFO L226 Difference]: Without dead ends: 66 [2024-11-08 19:25:07,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:25:07,820 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 15 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:07,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 245 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:25:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-08 19:25:07,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-08 19:25:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2024-11-08 19:25:07,824 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 17 [2024-11-08 19:25:07,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:07,825 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2024-11-08 19:25:07,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:07,825 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2024-11-08 19:25:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 19:25:07,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:07,826 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:07,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 19:25:08,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:08,027 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:08,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:08,027 INFO L85 PathProgramCache]: Analyzing trace with hash 865257127, now seen corresponding path program 2 times [2024-11-08 19:25:08,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:08,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144276560] [2024-11-08 19:25:08,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:25:08,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:08,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:08,030 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:08,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 19:25:08,354 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:25:08,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:25:08,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 19:25:08,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:08,375 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 19:25:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 19:25:08,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:25:08,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:08,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144276560] [2024-11-08 19:25:08,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144276560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:25:08,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:25:08,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:25:08,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736900894] [2024-11-08 19:25:08,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:25:08,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:25:08,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:08,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:25:08,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:25:08,513 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:08,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:08,871 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2024-11-08 19:25:08,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:25:08,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-08 19:25:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:08,872 INFO L225 Difference]: With dead ends: 73 [2024-11-08 19:25:08,872 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 19:25:08,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:25:08,873 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:08,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 137 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 19:25:08,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 19:25:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2024-11-08 19:25:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-08 19:25:08,879 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 35 [2024-11-08 19:25:08,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:08,880 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-08 19:25:08,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-08 19:25:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 19:25:08,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:08,884 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:08,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 19:25:09,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:09,085 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:09,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash 166907448, now seen corresponding path program 1 times [2024-11-08 19:25:09,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:09,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977708378] [2024-11-08 19:25:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:09,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:09,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:09,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:09,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 19:25:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:09,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 19:25:09,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:09,521 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 19:25:09,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 19:25:09,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 19:25:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 19:25:09,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:25:10,369 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 19:25:10,369 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:10,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977708378] [2024-11-08 19:25:10,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977708378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:25:10,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:25:10,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2024-11-08 19:25:10,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171764415] [2024-11-08 19:25:10,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:25:10,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 19:25:10,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:10,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 19:25:10,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-08 19:25:10,373 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:11,224 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2024-11-08 19:25:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 19:25:11,225 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-08 19:25:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:11,226 INFO L225 Difference]: With dead ends: 69 [2024-11-08 19:25:11,226 INFO L226 Difference]: Without dead ends: 69 [2024-11-08 19:25:11,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2024-11-08 19:25:11,227 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:11,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 344 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 19:25:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-08 19:25:11,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-08 19:25:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 68 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 19:25:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2024-11-08 19:25:11,232 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 39 [2024-11-08 19:25:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:11,232 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2024-11-08 19:25:11,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:11,233 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2024-11-08 19:25:11,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 19:25:11,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:11,234 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:11,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 19:25:11,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:11,435 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:11,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1496617879, now seen corresponding path program 1 times [2024-11-08 19:25:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:11,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926420079] [2024-11-08 19:25:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:11,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:11,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:11,438 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:11,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 19:25:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:11,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-08 19:25:11,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:11,823 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-08 19:25:11,824 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 20 [2024-11-08 19:25:11,918 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 15 treesize of output 1 [2024-11-08 19:25:11,935 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 19:25:12,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-08 19:25:12,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 19:25:12,170 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-08 19:25:12,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2024-11-08 19:25:12,205 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 19:25:12,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-08 19:25:12,738 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:25:12,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 37 [2024-11-08 19:25:12,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2024-11-08 19:25:12,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:12,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 34 [2024-11-08 19:25:12,851 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 30 treesize of output 22 [2024-11-08 19:25:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:25:13,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:25:13,506 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_sll_circular_create_~last~0#1.base| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_sll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((v_ArrVal_398 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_398) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((|ULTIMATE.start_sll_circular_create_~last~0#1.base| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_sll_circular_create_~last~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |ULTIMATE.start_sll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|)))) is different from false [2024-11-08 19:25:30,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:30,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2024-11-08 19:25:30,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2024-11-08 19:25:30,453 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 9 treesize of output 7 [2024-11-08 19:25:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 2 refuted. 2 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 19:25:30,994 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:30,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926420079] [2024-11-08 19:25:30,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926420079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:25:30,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:25:30,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-08 19:25:30,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745493245] [2024-11-08 19:25:30,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:25:30,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 19:25:30,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 19:25:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=550, Unknown=15, NotChecked=48, Total=702 [2024-11-08 19:25:30,997 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 27 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:33,718 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2024-11-08 19:25:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 19:25:33,719 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-08 19:25:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:33,720 INFO L225 Difference]: With dead ends: 81 [2024-11-08 19:25:33,720 INFO L226 Difference]: Without dead ends: 81 [2024-11-08 19:25:33,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=102, Invalid=589, Unknown=15, NotChecked=50, Total=756 [2024-11-08 19:25:33,721 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 49 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:33,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 296 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 603 Invalid, 0 Unknown, 70 Unchecked, 2.6s Time] [2024-11-08 19:25:33,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-08 19:25:33,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2024-11-08 19:25:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 73 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2024-11-08 19:25:33,726 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 41 [2024-11-08 19:25:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:33,726 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2024-11-08 19:25:33,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:33,727 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2024-11-08 19:25:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 19:25:33,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:33,728 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:33,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 19:25:33,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:33,932 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:33,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1496617880, now seen corresponding path program 1 times [2024-11-08 19:25:33,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:33,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807627920] [2024-11-08 19:25:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:33,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:33,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:33,935 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:33,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 19:25:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:34,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-08 19:25:34,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:34,207 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 19:25:34,356 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-08 19:25:34,357 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 19:25:34,456 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 15 treesize of output 1 [2024-11-08 19:25:34,472 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 19:25:34,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-11-08 19:25:34,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 19:25:34,762 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-08 19:25:34,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2024-11-08 19:25:34,808 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-08 19:25:34,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 19:25:35,394 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:25:35,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 35 [2024-11-08 19:25:35,412 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:25:35,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 46 [2024-11-08 19:25:35,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:35,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 32 [2024-11-08 19:25:35,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:35,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 28 [2024-11-08 19:25:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:25:35,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:25:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:25:38,427 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:38,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807627920] [2024-11-08 19:25:38,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807627920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:25:38,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:25:38,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2024-11-08 19:25:38,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125551246] [2024-11-08 19:25:38,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:25:38,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 19:25:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:38,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 19:25:38,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2024-11-08 19:25:38,430 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:41,643 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2024-11-08 19:25:41,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 19:25:41,645 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-08 19:25:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:41,645 INFO L225 Difference]: With dead ends: 80 [2024-11-08 19:25:41,646 INFO L226 Difference]: Without dead ends: 80 [2024-11-08 19:25:41,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2024-11-08 19:25:41,647 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 44 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:41,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 340 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 19:25:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-08 19:25:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2024-11-08 19:25:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 75 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2024-11-08 19:25:41,655 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 41 [2024-11-08 19:25:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:41,656 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2024-11-08 19:25:41,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:41,656 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2024-11-08 19:25:41,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 19:25:41,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:41,659 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:41,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 19:25:41,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:41,860 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:41,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:41,861 INFO L85 PathProgramCache]: Analyzing trace with hash -849487161, now seen corresponding path program 1 times [2024-11-08 19:25:41,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:41,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796113513] [2024-11-08 19:25:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:41,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:41,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:41,863 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:41,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 19:25:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:42,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 19:25:42,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:42,047 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 19:25:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 19:25:42,218 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:25:42,218 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:42,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796113513] [2024-11-08 19:25:42,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796113513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:25:42,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:25:42,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:25:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082440176] [2024-11-08 19:25:42,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:25:42,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:25:42,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:42,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:25:42,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:25:42,220 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:42,726 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2024-11-08 19:25:42,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:25:42,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 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 42 [2024-11-08 19:25:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:42,729 INFO L225 Difference]: With dead ends: 89 [2024-11-08 19:25:42,729 INFO L226 Difference]: Without dead ends: 89 [2024-11-08 19:25:42,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:25:42,730 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:42,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 147 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 19:25:42,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-08 19:25:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2024-11-08 19:25:42,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 80 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2024-11-08 19:25:42,739 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 42 [2024-11-08 19:25:42,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:42,739 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2024-11-08 19:25:42,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2024-11-08 19:25:42,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 19:25:42,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:42,741 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:42,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 19:25:42,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:42,942 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:42,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1089291607, now seen corresponding path program 1 times [2024-11-08 19:25:42,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:42,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013311045] [2024-11-08 19:25:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:42,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:42,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:42,944 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:42,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 19:25:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:43,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-08 19:25:43,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:43,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 19:25:43,296 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-08 19:25:43,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-08 19:25:43,417 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-08 19:25:43,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-08 19:25:43,522 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 19:25:43,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-08 19:25:43,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 19:25:43,824 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-08 19:25:43,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-08 19:25:43,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 19:25:43,853 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 19:25:43,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:25:43,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-08 19:25:43,965 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-08 19:25:43,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2024-11-08 19:25:43,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 19:25:44,150 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-08 19:25:44,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2024-11-08 19:25:44,191 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-08 19:25:44,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 19:25:44,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-08 19:25:45,272 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-08 19:25:45,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 78 [2024-11-08 19:25:45,392 INFO L349 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2024-11-08 19:25:45,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 115 [2024-11-08 19:25:45,407 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-08 19:25:45,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 93 [2024-11-08 19:25:45,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 19:25:46,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:46,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 84 [2024-11-08 19:25:46,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:46,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 76 [2024-11-08 19:25:47,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 19:25:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:25:47,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:25:48,576 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|)) (.cse1 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|))) (or (forall ((v_ArrVal_680 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_679 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~data_init~0#1| (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_679) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| v_ArrVal_680) (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (bvadd (_ bv4 32) (select .cse1 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))))) (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (and (forall ((v_ArrVal_672 (_ BitVec 32))) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| (store .cse0 .cse3 v_ArrVal_672)))) (store .cse2 |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| (store (select .cse2 |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|))) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|)) (forall ((v_ArrVal_673 (_ BitVec 32))) (= |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset| (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| (store .cse1 .cse3 v_ArrVal_673)))) (store .cse4 |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| (store (select .cse4 |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.offset| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))))))) is different from false [2024-11-08 19:25:49,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:49,830 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-08 19:25:49,837 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 140 treesize of output 122 [2024-11-08 19:25:49,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-08 19:25:49,856 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 28 treesize of output 20 [2024-11-08 19:25:49,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:49,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2024-11-08 19:25:49,922 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:25:49,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2024-11-08 19:25:49,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 19:25:49,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:49,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 22 [2024-11-08 19:25:49,974 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:25:49,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2024-11-08 19:25:49,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-08 19:25:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 10 trivial. 3 not checked. [2024-11-08 19:25:50,856 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:25:50,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013311045] [2024-11-08 19:25:50,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013311045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:25:50,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:25:50,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 31 [2024-11-08 19:25:50,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277855924] [2024-11-08 19:25:50,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:25:50,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 19:25:50,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:25:50,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 19:25:50,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=783, Unknown=11, NotChecked=56, Total=930 [2024-11-08 19:25:50,858 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:55,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:25:55,979 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2024-11-08 19:25:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 19:25:55,979 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 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 45 [2024-11-08 19:25:55,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:25:55,980 INFO L225 Difference]: With dead ends: 81 [2024-11-08 19:25:55,980 INFO L226 Difference]: Without dead ends: 81 [2024-11-08 19:25:55,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=192, Invalid=1522, Unknown=12, NotChecked=80, Total=1806 [2024-11-08 19:25:55,982 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 1 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:25:55,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 531 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 642 Invalid, 28 Unknown, 40 Unchecked, 3.5s Time] [2024-11-08 19:25:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-08 19:25:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-08 19:25:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 80 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 19:25:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2024-11-08 19:25:55,986 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 45 [2024-11-08 19:25:55,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:25:55,986 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2024-11-08 19:25:55,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:25:55,987 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2024-11-08 19:25:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-08 19:25:55,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:25:55,988 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:25:56,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 19:25:56,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:56,189 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:25:56,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:25:56,189 INFO L85 PathProgramCache]: Analyzing trace with hash -505210787, now seen corresponding path program 1 times [2024-11-08 19:25:56,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:25:56,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62547071] [2024-11-08 19:25:56,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:25:56,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:25:56,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:25:56,191 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:25:56,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 19:25:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:25:56,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-08 19:25:56,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:25:56,517 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-08 19:25:56,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-08 19:25:56,588 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-08 19:25:56,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-08 19:25:56,654 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-08 19:25:56,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-08 19:25:56,804 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-08 19:25:56,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-08 19:25:56,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 19:25:56,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2024-11-08 19:25:57,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2024-11-08 19:25:57,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-08 19:25:57,204 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 16 treesize of output 8 [2024-11-08 19:25:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 19:25:57,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:25:57,588 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_772 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_771 (_ BitVec 32))) (not (= |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_771)) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_772) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))) is different from false [2024-11-08 19:25:57,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:25:57,609 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 30 [2024-11-08 19:25:57,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2024-11-08 19:25:57,625 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 6 treesize of output 4 [2024-11-08 19:26:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 3 not checked. [2024-11-08 19:26:14,936 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 19:26:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62547071] [2024-11-08 19:26:14,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62547071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:26:14,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 19:26:14,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 24 [2024-11-08 19:26:14,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750621039] [2024-11-08 19:26:14,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 19:26:14,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 19:26:14,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 19:26:14,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 19:26:14,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=434, Unknown=6, NotChecked=42, Total=552 [2024-11-08 19:26:14,939 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:26:17,052 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2024-11-08 19:26:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 19:26:17,053 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-08 19:26:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:26:17,053 INFO L225 Difference]: With dead ends: 79 [2024-11-08 19:26:17,054 INFO L226 Difference]: Without dead ends: 79 [2024-11-08 19:26:17,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=152, Invalid=716, Unknown=6, NotChecked=56, Total=930 [2024-11-08 19:26:17,055 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 18 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:26:17,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 407 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 412 Invalid, 0 Unknown, 35 Unchecked, 1.5s Time] [2024-11-08 19:26:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-08 19:26:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-08 19:26:17,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 78 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2024-11-08 19:26:17,060 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 46 [2024-11-08 19:26:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:26:17,060 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2024-11-08 19:26:17,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:17,061 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2024-11-08 19:26:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 19:26:17,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:26:17,062 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:26:17,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 19:26:17,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:26:17,266 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2024-11-08 19:26:17,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:26:17,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1175136200, now seen corresponding path program 2 times [2024-11-08 19:26:17,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 19:26:17,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823522253] [2024-11-08 19:26:17,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 19:26:17,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:26:17,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:26:17,268 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:26:17,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acdf09-851c-42e6-882f-55c79db73729/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 19:26:17,583 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 19:26:17,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 19:26:17,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-08 19:26:17,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:26:17,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-08 19:26:17,789 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-08 19:26:17,789 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 16 treesize of output 17 [2024-11-08 19:26:17,873 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 19:26:17,887 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 15 treesize of output 1 [2024-11-08 19:26:17,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 19:26:17,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-11-08 19:26:18,127 INFO L349 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2024-11-08 19:26:18,127 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 28 treesize of output 33 [2024-11-08 19:26:18,377 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-11-08 19:26:18,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 38 [2024-11-08 19:26:18,444 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2024-11-08 19:26:18,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2024-11-08 19:26:18,573 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-08 19:26:18,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 39 [2024-11-08 19:26:18,608 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-08 19:26:18,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2024-11-08 19:26:18,916 INFO L349 Elim1Store]: treesize reduction 24, result has 56.4 percent of original size [2024-11-08 19:26:18,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 62 [2024-11-08 19:26:18,991 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2024-11-08 19:26:18,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2024-11-08 19:26:19,976 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-08 19:26:19,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 66 [2024-11-08 19:26:19,993 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2024-11-08 19:26:19,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 90 [2024-11-08 19:26:21,296 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-08 19:26:21,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 65 [2024-11-08 19:26:21,329 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2024-11-08 19:26:21,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 74 [2024-11-08 19:26:21,555 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-11-08 19:26:21,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 78 [2024-11-08 19:26:21,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:26:21,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 48 [2024-11-08 19:26:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 19:26:22,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:28:41,209 INFO L224 Elim1Store]: Index analysis took 120 ms [2024-11-08 19:28:41,271 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:28:41,322 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:29:09,618 WARN L286 SmtUtils]: Spent 28.11s on a formula simplification. DAG size of input: 108 DAG size of output: 77 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-08 19:29:09,618 INFO L349 Elim1Store]: treesize reduction 171, result has 48.3 percent of original size [2024-11-08 19:29:09,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 173 treesize of output 252 [2024-11-08 19:29:10,181 INFO L224 Elim1Store]: Index analysis took 434 ms [2024-11-08 19:29:44,904 WARN L286 SmtUtils]: Spent 34.33s on a formula simplification. DAG size of input: 125 DAG size of output: 79 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-08 19:29:44,904 INFO L349 Elim1Store]: treesize reduction 411, result has 32.3 percent of original size [2024-11-08 19:29:44,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 198 treesize of output 313 [2024-11-08 19:29:46,013 INFO L224 Elim1Store]: Index analysis took 613 ms [2024-11-08 19:29:46,937 INFO L349 Elim1Store]: treesize reduction 183, result has 2.1 percent of original size [2024-11-08 19:29:46,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 691 treesize of output 657 [2024-11-08 19:29:47,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 19:29:47,470 INFO L224 Elim1Store]: Index analysis took 113 ms [2024-11-08 19:29:51,595 INFO L349 Elim1Store]: treesize reduction 318, result has 33.3 percent of original size [2024-11-08 19:29:51,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 8 new quantified variables, introduced 38 case distinctions, treesize of input 1216 treesize of output 1535 [2024-11-08 19:29:52,045 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:29:52,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 19:29:52,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 177 [2024-11-08 19:29:52,695 INFO L224 Elim1Store]: Index analysis took 119 ms [2024-11-08 19:29:53,214 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:29:53,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 210 [2024-11-08 19:29:55,570 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:29:55,587 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-08 19:29:58,744 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-08 19:29:58,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 42 [2024-11-08 19:29:59,245 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:29:59,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-08 19:29:59,978 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:29:59,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 19:29:59,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2024-11-08 19:30:00,589 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:30:00,595 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:30:00,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:30:00,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 113 [2024-11-08 19:30:02,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 19:30:02,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 117 [2024-11-08 19:30:05,872 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:30:05,877 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:30:06,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:30:06,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 193 treesize of output 193 [2024-11-08 19:30:07,118 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 19:30:07,394 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-11-08 19:30:07,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 55 [2024-11-08 19:30:08,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2024-11-08 19:30:09,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 19:30:09,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 72 [2024-11-08 19:30:09,751 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 29 treesize of output 23 [2024-11-08 19:30:09,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 19:30:09,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 72 [2024-11-08 19:30:10,578 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 29 treesize of output 23 [2024-11-08 19:30:14,859 INFO L349 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2024-11-08 19:30:14,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 1753 treesize of output 1509 [2024-11-08 19:30:38,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 19:30:38,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 5356 treesize of output 4802 [2024-11-08 19:30:39,362 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 2323 treesize of output 2321 [2024-11-08 19:30:41,761 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 6 treesize of output 4